At 12pm a dealership sells at a price of $45/car. Give evidence to support or refute the claim that the change in the number of cars you can buy with $4,500 is approximately proportional to a small change in the price. 1)find a function that expresses the exact change in the number of cars in terms of the change in price.

2)use part 1) to compute enough difference quotients that suggest or refute a progression toward a limit.

3) Include units in all steps of your computations.