PLZ HELP!!

If f(x) = x2, g(x) = 5x, and h(x) = x +4, find each value.
Find f[h(-9)].

Which equation represents the model shown? a)1/3 divide 1/6 = 2 b)2/3 divide 1/6 = 2/18 c)1/3 divide 1/6 = 1/18 d)2/3 divide 1/6 =4

For what value of (y) is 3^3/3^y =1/9

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.