Question

Please help a 3 set question don't know how to do.
1. A company notices a linear relationship between the price of a luggage set and the number of luggage sets sold. At $100, the company sold 1,000 sets. When the company raised the price to $120, they only sold 800 sets.

A. What is the equation that relates the price of the luggage sets to the number of luggage sets sold?

B. If the price of each luggage set were $150, how many sets should the company expect to sell?

C. Explain what the slope of the equation from part A means in the context of the situation.