If you subtract twelve from twice a number, the result is six. what is the number?

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170

The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.

How would you describe the difference between the graphs of f(x) = 2x2 and g(x) = -2x2?