algebra

An economy car rented in Florida  from XYZ Rental on a weekly basis costs $95 per week.  Extra days cost $24 per day until the day rate exceeds the weekly rate, in which the weekly rate applies.  Also, any part of the day used counts as a full day.  Find the cost, C, of renting an economy car as a function of the number of x days used, where 7 ≤ x ≤ 14. Graph the function. 

must show detailed work