### Home > AC > Chapter 3 > Lesson 3.1.4 > Problem3-39

3-39.

Evaluate each expression below. Homework Help ✎

1. $\text{For}\ y=5+8x\ \text{when}\ x=4,\text{what does} \ y\ \text{equal?}$

Substitue $4$ in for $x$.

$y=5+8(4)$

Solve for $y$.

$y=37$

1. $\text{For} \ a = 3 − 5c\ \text{when}\ c = −0.5,\text{what does}\ a\ \text{equal?}$

Follow the steps in part (a).

1. $\text{For}\ n=2d^2−5\ \text{when}\ d=−2,\text{what does}\ n\ \text{equal?}$

Follow the steps in part (a).

Remember to follow the Order of Operations.

1. $\text{For}\ v = −3(r − 3)\ \text{when}\ r = −1,\text{what does}\ v \ \text{equal?}$

Follow the steps in part (a).

$v=12$