A number which can be expressed in the form of a/b is

What line represents the relationship between r and s

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?

2f(x)= x+3 if 4 < x < 8 2x if x 28 2