The height y of a parabolic arch is given y=-1/16x^2+40, where x is the horizontal distance from the center of the base of the arch. All distances are in feet.

A.) What is the highest point on the arch?

B.) How wide is the arch at the base to the nearest tenth of a foot?

Please show work! (: Help me out & I'll also help you if you need help. I have the answers to this, but I need to understand how to do the work, I have a test coming up.

Question

The height y of a parabolic arch is given y=-1/16x^2+40, where x is the horizontal distance from the center of the base of the arch. All distances are in feet. 

A.) What is the highest point on the arch?

B.) How wide is the arch at the base to the nearest tenth of a foot?

Please show work! (: Help me out & I'll also help you if you need help. I have the answers to this, but I need to understand how to do the work, I have a test coming up.

anonymous · Answer

@amistre64