Answer:
Step-by-step explanation:
Let burger = b and fries = f
<u>Alica:</u>
<u>Jack:</u>
<u>Simplify the second equation and subtract from the first one:</u>
- 2b + f = 14.78
- 2b + 3f - 2b - f = 21.18 - 14.78
- 2f = 6.4
- f = 3.2
<u>Find the value of b:</u>
- 2b + 3.2 = 14.78
- 2b = 11.58
- b = 11.58/2
- b = 5.79
(8x2)3 if that is meaning 8 times 2??
can be simplified to 48
The number is 12, if you split it into 3 parts you get 4 so 2/3 of it would be 8. then you just take 20 ans subtract 8 to get 12.
The function and the first value stated for x are confusing.
Doing some research, I found that the problem is to evaluate the function

for x = - 1 and x 2.
The solution is:
1) For x = - 1

2) For x = 2