Y=2(4)+4
=12 gallons in the tank so far
50-12
=38 gallons to fill
The slope of the inverse is 1/2.
So for this, you'll be using the pythagorean theorem to solve for the height.
Solve the exponents to get
Subtract 81 on each side to get
Square root each side, and your answer should be
or 13.23 ft
1. how much to tip
2. how much interest is needed for a loan
3. figuring out how much sales tax