Question

I already solved this but I'm confused if the answer is A or C?

A parabolic arch sculpture is on top of a city bank. A model of the arch is y=-0.005x^2 + 0.3x where x and y are in feet.
A. What Is The Distance From The Highest Point Of The Arch To The Ground?
B. What Is The Width Of The Bank?

A. a. 34.5 feet, b. 60 feet
B. a. 4.5 feet, b. 60 feet
C. a. 4.5 feet, b. 30 feet
D. a. 34.5 feet, b. 30 feet

Answer 1

Explanation:

a. 34.5 feet, b. 60 feet

B. a. 4.5 feet, b. 60 feet

C. a. 4.5 feet, b. 30 feet

D. a. 34.5 feet, b. 30 feet

Answer 2

The answer is C. a 4.5 feet, b. 30 feet