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Mathematics 17 Online
OpenStudy (anonymous):

PLEASE HELP ME OH MAH GAHD JEEZUS

OpenStudy (anonymous):

Maggie is having the flooring replaced in her kitchen, living room, and master bedroom. The kitchen is getting slate tile. The tile cost $1.73 per-square-foot plus an installation fee per-square-foot. The area of the kitchen is 120 square feet, and the total cost for the flooring with installation comes to $740.40. The living room is getting hand-scraped hardwood flooring. The hardwood cost $4.98 per-square-foot plus an installation fee per-square-foot. The area of the living room is 200 square feet, and the total cost for the flooring with installation comes to $1,688.00. The master bedroom is getting berber carpet. The carpet cost $2.48 per-square-foot plus an installation fee per-square-foot. The area of the master bedroom is 180 square feet, and the total cost for the flooring with installation comes to $928.80. Place the flooring type in order from the least amount to the greatest amount of cost to install per-square-foot. (Hardwood tile) (Tile) (Carpet) _______________, ______, ______ least to greatest

OpenStudy (anonymous):

@nincompoop @bibby @cj49

OpenStudy (anonymous):

so how can you find the installation fee for the kitchen?

OpenStudy (anonymous):

start there

OpenStudy (anonymous):

i dont know, that is how the question started

OpenStudy (anonymous):

ok so the tilecostpersquarefoot times the number of square feet will give you the total for the tile cost. make sense?

OpenStudy (anonymous):

so find that number first

OpenStudy (anonymous):

ah huh

OpenStudy (anonymous):

okay 1.73 times 120 is 207.60

OpenStudy (anonymous):

perfect, so now we have 207.60 + installationcost = total cost, so we have 207.60 + installationcost = 740.40

OpenStudy (anonymous):

okay okay

OpenStudy (anonymous):

so what is the installation cost?

OpenStudy (anonymous):

how do we find the instalation cost o_o

OpenStudy (anonymous):

isolate the installation cost on one side of the equation

OpenStudy (anonymous):

okayyyyy

OpenStudy (anonymous):

which will give you what?

OpenStudy (anonymous):

subtract 207.60 from both sides to get?

OpenStudy (anonymous):

632.80

OpenStudy (anonymous):

oh i just did that yay

OpenStudy (anonymous):

I MENT

OpenStudy (anonymous):

532.80 OOPS

OpenStudy (anonymous):

perfect, now to get installation cost per square foot from the total what would you do, remember you can think of "per" as division

OpenStudy (anonymous):

ah divide 740.40 by 207.60

OpenStudy (anonymous):

installationcost per square foot, installationcost / square feet, 532.80 divided by?? $$\frac{532.80}{?}$$

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

532.80 by 740.40?

OpenStudy (anonymous):

how many square feet did it say we have in the kitchen?

OpenStudy (anonymous):

um 740.40

OpenStudy (anonymous):

the original problem says we have 120 square feet,

OpenStudy (anonymous):

oh wait im dumb

OpenStudy (anonymous):

yeah yeah sorry i was looking at the wrong part

OpenStudy (anonymous):

no prob, so we have 532.80 / 120 = ?

OpenStudy (anonymous):

okay that is 4.44

OpenStudy (anonymous):

perfect, that is the number its asking for "cost to install per-square-foot" , so you are done with the kitchen, keep that number written down, and now do the same exact process for the other two rooms, then compare the numbers to see which is highest and lowest

OpenStudy (anonymous):

so you will be comparing 4.44 to two other numbers and putting them in order

OpenStudy (anonymous):

oh okay thank you

OpenStudy (anonymous):

DUDE

OpenStudy (anonymous):

no prob, msg me if you are stuck

OpenStudy (anonymous):

IT JUST

OpenStudy (anonymous):

KICKED ME OUT OF THE TESTT

OpenStudy (anonymous):

OKAY WELL I GUESS THAT QUESTION IS OUT NOW...

OpenStudy (nincompoop):

LAUGHING OUT LOUD erased!

OpenStudy (anonymous):

lmaooaoa

OpenStudy (anonymous):

and yes it was a practice test

OpenStudy (anonymous):

for u perl

OpenStudy (anonymous):

well that sucks guys

OpenStudy (anonymous):

OKAY WE GOOD

OpenStudy (anonymous):

hey nincompoop

OpenStudy (anonymous):

Marty's class collected $10.00 in a school-wide penny collection contest. If Tommy's class subtracted $7.00 from the amount they collected, x, and then multiplied the difference by 2, they would have the same amount of money as Marty's class. 2(x - $7.00)= $10.00 How much money did Tommy's class collect? $7.00 $26.00 $19.00 $12.00

OpenStudy (anonymous):

lets all walk thru this

OpenStudy (nincompoop):

do you want to solve for x?

OpenStudy (anonymous):

yeah so we add 7.00 to both sides

OpenStudy (nincompoop):

2(x - $7.00)= $10.00 not add yet, we need to follow the order of operation. multiplication is a higher order so we need to resolve that first by taking its opposite, division

OpenStudy (anonymous):

PMDAS

OpenStudy (nincompoop):

PEMDAS

OpenStudy (anonymous):

lol yeah i take out the exponent part bc in k12 they never include it idk

OpenStudy (nincompoop):

alright moving on

OpenStudy (anonymous):

okay so divide 2 by 7 and 10?

OpenStudy (nincompoop):

repeat that?

OpenStudy (anonymous):

so divide 7 and 10 by 2

OpenStudy (nincompoop):

no

OpenStudy (anonymous):

im biting off my acrylic nails rn -_-

OpenStudy (nincompoop):

get rid of the multiplication and the multiplication is only 2

OpenStudy (anonymous):

ok

OpenStudy (nincompoop):

then do the rest

OpenStudy (anonymous):

without multiplication its 2x - 7.00 = 10.00

OpenStudy (nincompoop):

\(\huge\frac{2(x - $7.00)}{2}= \frac{$10.00}{2} \)

OpenStudy (anonymous):

is the answer 12

OpenStudy (anonymous):

bc after that u add the two 7.00s on each side and one cancels out and then 5+7 is 12

OpenStudy (nincompoop):

AIGHTTTT

OpenStudy (anonymous):

OKAY IT JUST KICKED ME OUT AGAIN BC ITS A owlet

OpenStudy (anonymous):

OKAY OWLET AIGHT AIHT

OpenStudy (anonymous):

mr. nincompoop

OpenStudy (anonymous):

lets try and be fast now

OpenStudy (anonymous):

Janette went to Tire Mart and paid $122.57 per tire for 4 tires and a flat rate fee for installation for a total of $555.28 before taxes. Monique went to Fast Wheels and paid $136.71 per tire for 4 tires and a flat rate fee for installation for a total of $585.34 before taxes. The difference in the amount that they paid in installation charges is $

OpenStudy (nincompoop):

I don't like being told what to do :)

OpenStudy (anonymous):

$ is blank

OpenStudy (anonymous):

oh sorry then

OpenStudy (anonymous):

lets just be fast bc this practice test is dumb

OpenStudy (nincompoop):

try to solve it :)

OpenStudy (anonymous):

okay so 122.57 times 4 is 490.28

OpenStudy (anonymous):

thats for her tires so 490.28 + installation = $555.28

OpenStudy (anonymous):

so for installation its an equation so its 490.28 + n = 555.28 -490.28 -490.28

OpenStudy (anonymous):

one side cancels out so 555.28 -490.28 is 65

OpenStudy (nincompoop):

interesting

OpenStudy (nincompoop):

do you have that option?

OpenStudy (anonymous):

now we have 65*4 right and that is 260

OpenStudy (anonymous):

490.28 + 260 = oops

OpenStudy (anonymous):

im wrong once again

OpenStudy (anonymous):

okay so 555.28 minus 490.28 is 65

OpenStudy (anonymous):

490.28 + 65 = 555.28

OpenStudy (anonymous):

65 is the installation cost for that one

OpenStudy (anonymous):

so for the next one 136.70 times 4 is 546.84

OpenStudy (nincompoop):

Janette went to Tire Mart and paid $122.57 per tire for 4 tires and a flat rate fee for installation for a total of $555.28 before taxes that just means you have to multiply 122.57 by 4 then deduct it to 555.28

OpenStudy (anonymous):

ok

OpenStudy (nincompoop):

\(555.28- (122.57 \times 4) \)

OpenStudy (anonymous):

which is 65 right

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