Identify the variables: 8c * 7c - 10p + 12

Given the following statements, which is the best

The value √10 and √15 are plotted on the number line

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.