Motocross The path that a motocross dirt bike rider follows during a jump is given
 by y = -0.4x² + 4x + 10 where x is the horizontal distance (in feet) from the edge
 of the ramp and y is the height (in feet). What is the maximum height of the rider
 during the jump?
 20
 18
 16
 14
 12
 Height (feet)
 10
 6
 4
 2
 0 2 4 6 8 10 12
 Horizantal distance feet)
 My