Jimmy wants a burger. It is $30 but he has a coupon for 10% off. How much does he spend?

Pls brainliest will be awarded if answer is correct

What is the point slope form of a line with slope -5 that contains point (2,-1)

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.