Question

this one?

Answer 1

@hartnn

Answer 2

1.04 = 1+0.04 = 100% +4%
so,its increase in value per year!

Answer 3

thank you! what about this one?

Answer 4

93% in Decimal form is 0.93... and since it is positive I would Assume C.

Answer 5

since 0.93 is less than 1, its a decay

Answer 6

Oh :(

Answer 7

so it would be D?

Answer 8

you can confirm by plugging in x=1,2,3,4...you'll see that value decreass...

Answer 9

Yes... it's D, Trust Hartnn :P

Answer 10

did i get this one right? @hartnn

Answer 11

yes, correct :)

Answer 12

how about this one?

Answer 13

correct!

Answer 14

im taking this practice reveiw for my algebra 1 exam. can i take a screen shot of the problems (alot of them youve already helped me with) and attach them ? can you tell me whihc ones i got wrong? it would really help a lot!

Answer 15

if i have enough time, then sure, i will help :)

Answer 16

thank you so much!

Answer 17

correct

Answer 18

1.005644^4 = 1.02276784858

Answer 19

so its would be C?

Answer 20

\(\huge a^{bc} = (a^b)^c\)

yep C

Answer 21

okay

Answer 22

yah, correct

Answer 23

I was still counting lol

Answer 24

shift down by 3
so subtract 3

0.5^x-3

comparing with
0.5^x-k

we get k=3

Answer 25

okay thank you

Answer 26

correct!

Answer 27

thats also correct :)

Answer 28

Yep

Answer 29

Wait is 8 x or y

Answer 30

x =- 6, y= 8

Answer 31

so you're correct!

Answer 32

okay (=

Answer 33

I think your right.

Answer 34

yes, correct :)

Answer 35

thats correct too :)

Answer 36

correct

Answer 37

correct!

Answer 38

Yay! thank you so much! i have another reveiw to do tomorrow. will you be on tomrrow night if i need some help????

Answer 39

if i am online, i will help :)
couldn't say anything for sure .... :)

Answer 40

i have one more question if thats okay?

Answer 41

sure

Answer 42

Task 3

Part 1: Create a scenario for an arithmetic sequence. For example, Jasmine practices the piano for ______ minutes on Monday. Every day she ___________ her practice time by _________. If she continues this pattern, how many minutes will she practice on the 7th day? Be sure to fill in the blanks with the words that will create an arithmetic sequence. Use your scenario to write the function for the 7th term in your sequence using sequence notation.

Part 2: Create a scenario for a geometric sequence. For example, Anthony goes to the gym for ______ minutes on Monday. Every day he _________his gym time by ____________. If he continues this pattern, how many minutes will he spend at the gym on the 5th day? Be sure to fill in the blanks with the words that will create a geometric sequence. Use your scenario to write the formula for the 5th term in your sequence using sequence notation.

Part 3: Use your scenario from part 2 to write a question that will lead to using the geometric series formula. Use the formula to solve for Sn in your scenario.

Answer 43

i just need part 3! here is what i have for part two and some of part 3....

part 2: Anthony goes to the gym for 50 minutes on monday. Every day he doubles his gym time.
function- An=50(2)^n-1
on the 5th day- A5=50(2)^4
A5=800
part 3: If anthony goes to the gym for 50 minutes on monday. Each day he doubles his gym time by a ratio of two.

Answer 44

so we need to make a question, so that we can use the formula
\(A_n = A_1 r^{n-1} \)

Answer 45

so how do we do that?

Answer 46

we already used it in 2nd scenario...but ok, to use it again, we can make a question, that after how many days, Antony will go to gym for 3200 minutes!

Answer 47

here, A_n = 3200
A1 = 50
r= 2
find n

Answer 48

so for the question i should write, anthony goes to the gy for 50 minutes on monday. each day he doubles his gym time. How many days will it take anthony to work out in the gym for 3200 minutes?

Answer 49

thats correct.

Answer 50

okay so the equation would look like..?? im confused on that part because it is saying to solve for sn??

Answer 51

you know exactly which formula the asker means by "geometric series formula"

Answer 52

because Sn means sum of n terms

so that formula which the asker is talking about, might be the sum formula

Answer 53

which is
\(\Large S_n =A_1 \dfrac{r^n-1}{r-1}\)

Answer 54

if you need th question for sum formula, then the right question would be

"In 5 days (or 6 or 7 or whatever), how many total number of minutes, will have Antony gymmed?"

Answer 55

then you would use that Sn formula
with
A1 = 50
r =2
n=5

Answer 56

so instead of asking how many days it will take for him to have 3200 minutes in the gym i need to ask in five days how many minutes will he have? didnt i do that in art 2?

Answer 57

in art 2, it was how many minutes on 5th day only...

here we are finding sum or total minutes

its like asking, in all, from 1st day to last(5th) day, how many total number of minutes were spent gymming

Answer 58

50 + 100 + 200 + 400 + 800

Answer 59

if you use the sum formula you will get the same answer as you'll get for above

Answer 60

which is 1550 minutes

Answer 61

okay so the sum formula with the numbers all plugged in would look like
sn=(50^2n-1)/2

Answer 62

no...

\(\Large S_n = 50 \dfrac{2^5-1}{2-1}\)

Answer 63

n=5

denominator = r-1 = 2-1 = 1

Answer 64

oh okay hold on let me solve it

Answer 65

1550?

Answer 66

thank you so much! you really helped!

Answer 67

welcome ^_^
happy to help :)