A car rental agency charges $31 per day to rent a car and $13.95 per day for a global positioning system (GPS). Customers are charged for their full tank of gas
at $3.60 per gallon. A car has a 16 gallon tank and a GPS.
a) Write a function rule for the total bill b as a function of the days d the car is
rented,
b) What is the bill for a 10 day rental?

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.