Carol bought 500 yards of curling ribbon. she used 1 5/6 yards on a package for her mother and 3 5/8 on a package for her daughter. how many yards of ribbon did carol use in all?

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.