For the function f defined by f(x) = 3x^2 + 3x + 4, find the following values. (a) f(-9) =
(Simplify your answer.)

If ac = 12 and ab=7 is it possible that bc =10

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. what is a reasonable explanation for different rules with different input values producing the same sequence?