Part A A hardware store rents vacuum cleaners that customers may use for part or all of a day, up to 12 hours, before returning. The store charges a flat fee plus an hourly rate. Write a linear function f for the total rental cost of a vacuum cleaner.

Hours: 1, 1.5, 2, 2.5, 3
Cost ($): 20, 23, 26, 29, 32

A. f(x) = 6x + 14

B. f(x) = 3x + 14

C. f(x) = 3x + 22

D. f(x) = 6x + 24

Part B
Flat fee the store charges = $ ?

A reasonable domain for the function is:  ?< x ≤ ?

Cost to rent a vacuum for 7 hours = $ ?

Pls help