What is the point of 0.6 and 0.2

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.

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

What is the y-intercept of the line given by the equation