Problem 1: Dwayne took his car to have the timing belt replaced. If the belt costs $150 and the mechanic charges $85 per hour for his labor, write an equation that relates Dwayne's total cost(t) to the number of hours (h) the mechanic works.

1. What is the beginning value or b or y-intercept?

2. What is the rate per hour or slope or m?

3. Put the two values in the equation y=