Question

As incentive for Gretchen to save the $2,500 she recently inherited, her parents tell her that they will pay her 10% simple annual interest on the amount that she saves. How much money will Gretchen have after 10 years if she saves all of the money she inherited?

Answer 1

I know the formula I=PRT.. but I don't know how to solve it.

Answer 2

What is the P, the R, and the T? T=time right?

Answer 3

P is Percent
R is rate
t is time

Answer 4

Okay so plug the values into the formula and I'll help you solve it.

Answer 5

2,500=.10*2,500*10

? I think.. :O

Answer 6

No, your trying to get the Incentive or I for 10 years so it would be I=0.10*2500*10

Answer 7

Close.. :)

Now do I just multiply it all?

Answer 8

yepp, 0.10*2500*10 so try it (:

Answer 9

wait i think we may have done something wrong...

Answer 10

this isn't making sense..she should have more but after you multiply it all out I get 2500

Answer 11

Yeah, don't ask me I mess this up bad.

Here are the answer choices:

a) $2,708
b) $2,727
c) $2,78
d) $5,000

Answer 12

c) $2,778*

Answer 13

this doesn't add up, if I=PRT and P=Percent, R=Rate, and T=Time, it should be set up how we had it I=.10*2500*10 but when you do that you get 2500

Answer 14

Well, it doesn't matter because you could change it a million times and it still all equal 2,500. IM SO LOST :c

Answer 15

what does the I stand for?

Answer 16

Interest?

Answer 17

Oh okay I get it now, you have I which is the accumulated amount of interest. To find the amount of interest on $2500 over a 10 year period with and annual rate of 10% you use the formula which does give you $2500. the I=$2500 is ONLY the amount of interest, you have to add that to the 2500 she started with. 2500+2500=? and thats your answer

Answer 18

you get it now?

Answer 19

yes, thanks:)

Answer 20

haha no problem(:

Answer 21

http://oi46.tinypic.com/24buuyx.jpg

Help me with another?

Answer 22

sure, that pic didnt come up tho it said 404 not found

Answer 23

It's coming up fine one mine. ):

Answer 24

http://tinypic.com/view.php?pic=24buuyx&s=6

Answer 25

idk its not coming up on here, can you attach it as a file on here ?

Answer 26

okay so whats the SA formula of a cube? of a square pyramid?

Answer 27

I have no idea.

Answer 28

haha well how many faces does a cube have?

Answer 29

8..?

Answer 30

Oh, no a cube has 4 I think.. xD

Answer 31

plus to one on top and one on bottom so theres 6 in total which makes the SA formula for a cube 6s^2 where s is the length of the side

Answer 32

It's not a cube!

Answer 33

do 6(7*6)=SA of the bottom figure

Answer 34

@srw1496 It's not SA formula!

Answer 35

what are you talking about? she's trying to find SA and to find the SA of the rectangular prism on the bottom you would do (7*6)(7*6)(7*6)(7*6)(7*6)(7*6)=6(7*6)

Answer 36

" do 6(7*6)=SA of the bottom figure "
NOT SA!!!

Answer 37

thats how i was taught

Answer 38

Well, I guess you can learn better by:
SA = Area of base + Lateral Area

Answer 39

I don't know what that is...I was taught depending on the shape, to find the area of one face then multiply it by the amount of sides which is 6 in this case that finds the SA of the base shape, then you would find the SA of the top shape, the triangular pyramid and add them together

Answer 40

Since the base is square,
Area of base: 6² = 36
4 other faces are rectangular: ...

Answer 41

That's just for the Prism, not for pyramid yet!