Find the constant of proportionality for each set of values

Which triangles area would be calculated using the trigonometric area formula

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

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?