Answer:

Step-by-step explanation:
To find the inverse of a function, swap the places of the x and y variables and solve for y again.

Answer:
-8
Step-by-step explanation:
(-2)(-2)(-2)
4(-2)
-8
if his height is H, and she is 7 inches shorter than him, her height can be represented by the algebraic equation H-7
Answer:
Look just at finding the linear model. Two points. Use price per gallon for x and gallons per hour sold for y. Your two points (x,y) are (2.15,1600) and (2.55,800).
Slope m=%281600-800%29%2F%280.15-0.55%29
m=800%2F0.40
m=2000
Using point-slope form for a line, and the lower-y point,
y-800=2000%28x-2.55%29
highlight%28y=2000%28x-2.55%29%2B800%29
7 is length and 5 is width. Hope this helped!!