If DC= 8.4, BC= 30, and AD= 42, find AB. Round your answer to the nearest tenth

Equation for the calculation double 2 and then add 5

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

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.