Aball is launched at 20 m/sec from a 50 m tall platform. the function of the ball’s height (h) at time (t) seconds after launch is h(t) = -5t^2 + 20t + 50. what is the domain of this situation?

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18