A rental: A rental car agency charges $49.00 per day and 25 cents per mile. a. Calculate the rental charge if you rent a car for 2 days and drive 100 miles. b. Use a formula to express the cost of...

A rental: A rental car agency charges $49.00 per day and 25 cents per mile.

a. Calculate the rental charge if you rent a car for 2 days and drive 100 miles.

b. Use a formula to express the cost of renting a car as a function of the number of days you keep it and the number of miles you drive. Identify the function and each variable you use, and state the units.

c. It is about 250 miles from Dallas to Austin. Use functional notation to express the cost to rent a car in Dallas, drive it to Austin, and return it in Dallas 1 week later. Use the formula from part b to calculate the cost.