Amarathon runner will donate $5000 to charity if her time is less than or equal to 3 hours. she will donate $2000 if her time is more than 3 hours but less than or equal to 4 hours. finally, she will donate $1000 to charity if her time is more than 4 hours.
a. write a piecewise function describing 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