9) mr. keller bought a new scooter for $900. he used a function to
estimate how its value will depreciate, or decrease over time.
lesson 21
age in years, t
12
value of dollars, vt) $900 $765 $650.25 $552.71
what type of function did mr. keller use to model this relationship?
describe the rate at which the scooter depreciates. write an equation
for the function.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.