Andre bought a stamp to mail a letter that costs 46 cents. he also mailed a package that costs 5 times as much as a stamp. how much did it cost to mail the package and the letter?

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.