Question

Please help me by checking my work! I will medal and fan!

Answer 1

1. I think it's B.. @Nay_Af

Answer 2

I'm sorry but we're not allowed to help on tests/quizzes/exams/assignments here :/
that would be considered cheating :(

Answer 3

Um.. it's not a test, it's like practice problems for studying.. I want to know if I worked the problems out properly and get them correct. @pooja195

Answer 4

Its labeled quiz questions.

Answer 5

at most 130 means that it can include that number (I think)

Answer 6

Option C seems correct (less than or equal to 130)

Answer 7

I know! I just have it labeled that. Gosh, I'm sorry. I thought open study was for helping, and understanding. It's not like I'm telling people to give me answers. damn chiil @pooja195

Answer 8

You would have your answer if you knew what "at most" meant since theres only one option that matches that :)
And im sorry for being rude. I thought it was a quiz question since it was labeled that way.

Answer 9

@Nay_Af would you mind also explaining how you got that answer so that Ms-Brains can understand for future similar questions?

Answer 10

You guys are just crowding up my question. @pooja195 and @jigglypuff314 That wasn't cool. Thanks for trying to help @Nay_Af

Answer 11

I'm not cool? ;-;
how come?
I was pointing out "at most 130 means that it can include that number" for you

Answer 12

Perimeter = Sum of the sides.

Length = 4 times Width

L = 4 W

Perimeter = L + W + L + W

P = 2W + 2 L

P = 2W + 2 (4W)

Since, it is said that the perimeter is at most 130, that means that its maximum value can be 130, and that it can be less than 130 as well.

That's why, option C is the correct option that gives equal to or less than 130.

Answer 13

I'm sorry, I've just been trying to figure this out since last night, and it's making me frustrated. I'm sure you're a pretty cool person. :) I didn't mean to include you in that. @jigglypuff314

Answer 14

much better @Nay_Af ! well done :)

Answer 15

Can you help with this one? I think it is C, or A I'm a little lost..

Answer 16

@Nay_Af

Answer 17

Sure. Give me a minute.

Answer 18

Length = 3 times Width

L = 3W

Perimeter is maximum 112 cm.

P = Sum of the sides.

P = L + W + L + W

P = 2W + 2L

Using L = 3W, it becomes,

P = 2W + 2(3W)

P = 2W + 6W

P = 8W

As it is already given that maximum perimeter is 112 cm.

So, P = 8W = 112 cm

8W = 112

W = 112/8

W = 14 cm (that should be the maximum value of width)

Answer 19

Oh! Okay, I understand. I get where I went wrong.

I think this next one is C?

Answer 20

@Nay_Af Can you confirm?

Answer 21

Sure. Please wait again till I solve it on paper.

Answer 22

Reiko started a business.

Her expenditures:

- $6500 to obtain merhandise

- $550 per week for other expenses. It means, for 2 weeks, it will be $550 (2). For 3 weeks, it will be $550 (3) and so on. So, take it as $550 W where W = number of weeks.

So, total expenditure= $6500 + $550W

Now, see her earnings:

She earns $900 per week. So, for W number of weeks, her earning should be $900W

Question asks for the minumum number of weeks to make a profit.

Remember: To make profit, earnings should be greater than expenditures.

So, earnings > expenditures

$900W > $6500 + $550W

Answer 23

It's B?

Answer 24

Yes, it's B according to my calculations.

Answer 25

Okay last one I need help on. :) @Nay_Af
I'm thinking C again

Answer 26

Sure. Wait a while.

Answer 27

Okay.

Answer 28

Josephine started a business.

Her expenditures:

- $4500 to obtain merchandise

- $200 per week for other expenses. For 2 weeks, it will be $200 (2). For 3 weeks, it will be $200 (3) and so on. So, take it as $200W where W = number of weeks.

So, total expenditure= $4500 + $200W

Now, see her earnings:

She earns $550 per week. So, for W number of weeks, her earning should be $550W

Question asks for the minimum number of weeks to make a profit.

Again: to make profit, earnings should be greater than expenditures.

So, earnings > expenditures

550W > 4500 + 200W

550W - 200W > 4500

350W > 4500

W > 4500/350

W > 12.85

So, more than 12.85 weeks are required.

Given options are: 14, 12, 13, 15.

12 is wrong. So, drop this option.

Since, question asked for minimum number of weeks, we will choose the minimum number from the remaining options. So, 13 seems the correct answer.

Answer 29

Yay! I' at least got one correct. cx Thanks for the help!

Answer 30

Awesome :)

You're welcome and best of luck.

Answer 31

You got most of them correct! now I'm ready to begin the quiz!

This one was incorrect though...

Answer 32

I thought' i'd let you know. cx Bye thanks!

Answer 33

Let Sue's age = x
Jenny's age = y

y = 2x + 8

Also, x + y < 32

So, x + 2x + 8 < 32

3x + 8 < 32

3x < 24

x< 8

Since Sue's age is coming less than 8 after solving the inequality. The answer should be 7.