A baseball player hits the ball into the air. The height h of the baseball can be modeled approximately with the equation h= -0.0004x^2 +0.15x +4, where x is the horizontal distance from home plate. How far away from home plate did the baseball land?

Question

anonymous · Answer

a) about 400 ft
b)about 346 ft
d)about 40 ft
d)about 25 ft

mrnood · Answer

The ball lands when h=0

So - use the equation -
 -0.0004x^2 +0.15x +4=0

It's a quadratic - solve for x 
There will be 2 answers  ( one will be negative) the positive one is the answer you want.

jdoe0001 · Answer

have you covered quadratics yet?

anonymous · Answer

no