Suppose that f(x) varies directly with x and f(x) = 160 when x = 5. what is f(x) when x = 0.5? a. 16 b. 32 c. 160 d. 180

1foot = 12 inches; 1 yard = 3 feet

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

Ithink i know it but i want to be sure so can you me out ?