Jane buys a coat that is $18 off the orinigal price. this is a 30% discount. what is the original price of the coat?
explain how to get answer?

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.