Algebraic Expressions Evaluating

Evaluate 3x + 8   if x = 2

• 13

• 14

• 15

• 16

Evaluate 2r + 1      if   r = 3

• 6

• 5

• 7

• 8

evaluate bc + 5a  
when  a = 3, b = 4, and c = -6

• 9

• 38

• -38

• -9

Evaluate the expression when y = 5
2y² + 3y

• 75

• 65

• 115

• 105

Use order of operations to evaluate this algebraic expression.

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

Evaluate the expression

• -9

• 28

• 21

• 7

Evaluate the expression

Mathematical Equivalence

ON

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.

• 3

• 4

• 18

• 24

• 7