The expression (√90 *√40) - (√8*√18) simplifies to what

Which number line represents the solution set for the inequality -1/2x> 24?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

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.