What is the rate of change from x=-3 to x=-2

Anyone know? will mark brainliest if you're correct!

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

What is the ratio of the length of an object in yards to the length of the same object in miles?