Evaluate Algebraic Expressions Multivariable

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20

• 24

• 44

• 4

6a - 3d
when a = 1, d = 2

• 3

• 12

• 1

• 0

8y + 12 - 2z
for y = 4 and z = 2

• 40

• 20

• 84

• 34

Evaluate when x = 2 and y = 5:

2 + (12 - 5x) ⋅ 2y

• 22

• 40

• 142

• -86

Evaluate the expression
when x=8 and y=12.
4x − 2y 

• 4(8) − 2(12)

• 0

• 8

• 4

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

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 if a = 2 and b = 8
6 + 7b - 3a

• -100

• 100

• -56

• 56

The expression 7h + 1.50d can be used to find the total earnings after h hours and d deliveries have been made.  How much will Sally make after working 10 hours and making 3 deliveries?

• $74.50

• $36

Evaluate 8a - b     if a = 10   and   b = 6

• 74

• 38

• 1000

• 9000