Unit 10 circles homework 2 Central angle and arc measures

Jessica is a custodian at oracle arena. she waxes 20 m2 of the floor in 3/5 of an hour. jessica waxes the floor at a constant rate. at this rate how many sqaures meters can she wax per hour

For the equations below which statement is true ?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.