### Home > PC3 > Chapter 2 > Lesson 2.2.2 > Problem2-70

2-70.

​​As the connected complexity of mathematical concepts evolve, your mathematical knowledge evolves as well. Previous knowledge provides the necessary skills to acquire new learning. If necessary, review the Function Notation Skill Builder, to strengthen your understanding of this topic.

Let $f(x)=4x+7$ and $g(x)=x^2-3$

1. Evaluate $f(12)-g(2)$.

1. Evaluate $g(f(-1))$.

1. Write an equation for $f(w+2)$.

1. Write an equation for $g(k+5)$.

Answers and extra practice for the Skill Builder problems are located in the Reference Tab of your eBook.
Click the following link: Function Notation Skill Builder