Evaluate the expression when a=4 and b=20
b-5a

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

5. (04.07)which of the following exponential functions goes through the points (1, 12) and (2, 36)? (2 points)f(x) = 3(4)^xf(x) = 4(3)^-xf(x) = 3(4)^-xf(x) = 4(3)^x