Question

Cookies (c) and bottles of water (w) are sold at a snack bar. The cost of 4 cookies and 2 bottles of water is $3.90 before tax. The cost of 3 cookies and 3 bottles of water is $4.05 before tax.

Answer 1

here

Answer 2

so wat r u asking

Answer 3

What's your question...?

Answer 4

where is the rest of the problem?

Answer 5

oh, sorry hold on

Answer 6

thats fine

Answer 7

a) Write the systems of equations that represent the information
b) Use the system of equations to determine the cost of 1 cookie and the cost of 1 bottle of water before tax

Answer 8

okay let me see

Answer 9

@Mathbreaker

Answer 10

take ur time

Answer 11

so its
4c + 2w = 3.9
3c + 3w = 4.05
solve these equations to get teh answer :)
Simultaneous equations :)

Answer 12

okay 4c+2w=$3.90

Answer 13

c4+2w=3.90
w~~0.5 (3.9-c^4)

Answer 14

c = 0.6 and w = 0.75 just in case youre confused :)

Answer 15

Therefor w is simply fifty cents

Answer 16

ya I kinda was lol, I kinda suck at math

Answer 17

thx guys, so jsut to be sure the answer is $.50

Answer 18

*just

Answer 19

http://www.wolframalpha.com/input/?i=c4%2B2w%3D3.90+ You can check here

Answer 20

Haha its all about practice i bet you dont :)
Look up simultaneous answers if you want help with that
No i dont think so, i solved it on wolfram alpha and got http://www.wolframalpha.com/input/?i=4c+%2B+2w+%3D+3.9%3B+3c+%2B+3w+%3D+4.05

Im too lazy to do the math but i think tits 0.6 and 0.75

Answer 21

ok thx!

Answer 22

Yeah wolfram's my rock.

Answer 23

c4+2w=3.90

Answer 24

Emilyowl, its not c^4.. its 4c + 2w = 3.9
this isnt an exponential function its simply simultaneous :)

Answer 25

its not c4 guys!
Its 4*c + 2*w = 3.9
c4 would be c * c*c*c.... thats weird :P

Answer 26

Ill give you a final answer
4c + 2w = 3.9
3c + 3w = 4.05
Solving them simultaneous according to this link: http://www.wolframalpha.com/input/?i=4c+%2B+2w+%3D+3.9%3B+3c+%2B+3w+%3D+4.05

Gives me c = 0.6, w = 0.75. And i am absolutely certain its right.

Answer 27

If you were to use c as a real number hypothetically, then the problem would be exponential.

Answer 28

What are you implying emilyowl? That makes no sense. Its not exponential. its a system of equations, thats simultaneous :|

Answer 29

I'm not implying anything, what I said is what I've learned. But it doesn't really matter anymore so okay.

Answer 30

haha alright im confused about why you put c^4, but lets leave it at this haha