Which of the following values "completes the square," or creates a perfect square trinomial, for x^2 − 12x + ___?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?