### Home > CCA2 > Chapter 1 > Lesson 1.1.2 > Problem1-17

1-17.

Carmichael made a function machine. The inner workings of the machine are visible in the diagram below. What will the output be in each of the following cases? Homework Help ✎

1. If 3 is dropped in?

Substitute 3 for every x (into $x^2+2x+1$).

$(3)^2+2(3)+1$

16

2. If −4 is dropped in?

Substitute $(−4)$ for every x in the expression.

3. If −22.872 is dropped in?

≈ 478.38