Algebra 1 Evaluating Algebraic Expressions

What are the variables in the following expression?

• 3, 4, 1 and 7

• z, x and y

• + and -

• 15

What is the coefficient in the following expression?
q + 4r − 18 + 2³ - 1
q = 3
r = 2

• 18

• 3

• 4

• 2

Evaluate the expression:
7 · (k ÷ 5)
k = 25

• 35

• 5

• 42

• k

If   x=5
what is
2x+2

• 7

• 12

• 4

• 10

For a monthly family cookout, David buys 3 packages of hot dogs and 4 packages of hamburger patties. Hot dog packages each contain x hot dogs. Hamburger packages each contain y hamburger patties. Complete the expressions for the total number of hot dogs and hamburger patties David buys for 6 cookouts. 6( ​ (a)   x + ​ (b)   y)

​ (c)   x + ​ (d)   y

• 3

• 4

• 18

• 24

• 7

Find the value of the expression.

• -12

• 12

• 14

• -14

For a monthly family cookout, David buys 3 packages of hot dogs and 4 packages of hamburger patties. Hot dog packages each contain x hot dogs. Hamburger packages each contain y hamburger patties. Complete the expressions for the total number of hot dogs and hamburger patties David buys for 6 cookouts. 

6( ​ (a)   x + ​ (b)   y)

​ (c)   x + ​ (d)   y

• 3

• 4

• 18

• 24

• 7

5p + 4h - 2
Which are the variables? 

• 5p, 4h, 2

• 2

• p, h

• 5, 4

What is the variable in 3x - 5

• x

• 5

• 3

The number you see before a variable (Example: 6z, the 6 is the ________)

• coefficient

• variable

• term

• product