A certain car rental agency charges $40 per day with 100 free miles plus 0.34 cents per mile after the first 100 miles. First express the cost of renting a car from this agency for one day in terms of the number of miles driven. Then draw the graph and use it to check your answers to these questions.

a. How much does it cost to rent a car for a 1-day trip of 50 mi?

b. How many miles were driven if the daily rental cost was $92.36?

Thanks in advance. I appreciate any help I can get.