SAT Math Practice 4 - Composite Functions

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Composite Functions

Most students have real trouble when learning about these type of functions. Once they get past the "I can't" phase it is actually easy to understand. A composite function is actually two functions, one inside of the other. This is what they mean:

Example

It is asking us to plug in g into f, replace all of the x's with 1/2x - 4, and simplify.

SAT Practice

Solution

Therefore, the answer is B.

Extra Practice (Solutions at the bottom)

Question 1

Question 2

Question 3

Archives

SAT Math

1, 2, 3

Actuarial Mathematics

1, 2, 3, 4, 5, 6, 7, 8

Cheers Steemites! Have a great day!

Solutions (a) 2 (b) 7 (c) 2