Given g(x)=3x+6, find the value of x when g(x)=30.

15x-30

Step-by-step explanation:

This is a composite function, which means you are combining two functions together. This can seem tricky, but once you understand how to break these problems into pieces it becomes much easier.

g(f(x)) can be read as g of f of x. Which means we are plugging the function f(x) into the function g(x). Think of it like this, if I were to ask you to find g(3) you would need to plug the value 3 into the function g(x). This would look like this: g(3) = 5(3)              So g(3)= 15

     However, when we are working with a composite function instead of a whole number we want to first look at the second function, so that we can rewrite the problem. In this problem f(x) = 3x -6

                               So, I can rewrite this as g(3x -6)

                               g(3x-6) = 5(3x-6)

                                g(3x-6) = 15x - 30

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney