What is the length if a right triangle with a leg that measures 16 and a hypotenuse of 20

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

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.