### Home > ACC6 > Chapter 6 Unit 6 > Lesson CC1: 6.2.4 > Problem6-110

6-110.

Evaluate the expressions below for the given values of the variables.

For the expression below, you can substitute the values given for each variable and then simplify the expression.
It is important to remember that $2p$ really means two p's or $(2) \times (p)$.
$2p + 8 \text{ for } p = 4$
$2(4) + 8 = 8 + 8 = 16$
And, remember to follow the Order of Operations!

1. $6j−3\ \text{for}\ j=4$

$\begin{array} \\6j−3\ \text{for}\ j=4\\6(4)−3\\24-3\\\ \ \ \ \ ?\end{array}$
Be sure to show all of your work!
This way you will be less likely to make mistakes.

$21$

2. $b(b)+5 \text{ for } b=3$

If the variable is substituted here, the expression becomes $3(3) + 5$.
Can you simplify it now?

$14$

3. $8+4k \text{ for } k=3.5$

• Substitute $3.5$ in for $k$.