Coffee costs $12 per case, and tea costs $8 per case. if an order comes in for a total of 250 cases for $2,600, what was the specific number of cases of tea? (hint: let c = cases of coffee.)

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.