I need help in geometry trying to find the area for #6-8

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

What is the ratio of the length of an object in yards to the length of the same object in miles?

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.