Rent and Go Car Rental Serves the Greater Sacramento Area $x$

Essay

Rent and Go car rental serves the greater Sacramento area. If $x$ represents the number of days you rent a car, where $x>0$ , then the function defined by $f(x)=30 \llbracket x \rrbracket+10$ gives the total cost of a car rental in dollars.
(a) Using dot mode and the window $[0,6]$ by $[0,200]$ , graph this function on a graphing calculator.
(b) Use the graph to find the cost of renting a car for 5 days.