Answer:
f-1(x)=-x-
Step-by-step explanation:
First, switch f(x) to the variable "y".
y=-x-8
Next, swap "x" and "y" with each other.
x=-y-8
Next, lets move the denominator of 2 to the other side by multiplying both sides by 2. Your result will be...
2x=-3y-16
Now move -16 to the left side.
16+2x=-3y
To get "y" by itself, lets divide each side by -3. Our result is...
y=-x-
To finish the problem off, replace y with f-1(x) and your complete answer will be...
f-1(x)=-x-
b. Your swimming pool is in the shape of a cylinder with a diameter of 16 feet and has the same volume as your friend’s pool. What is the height of your pool? Round your answer to the nearest whole number.
c. While you were on vacation, 6 inches of water evaporated from your pool. About how many gallons of water evaporated from your pool? ( ) 3 1 ft 7.5 gal ≈ Round your answer to the nearest whole number.
this is not part of the problem but im sorry if this is to easy but i need some help with it because my english is not that good so i don't get it....