Variable in Expressions

Evaluate the expression if a=3 and b=4.
10 + b 

• 14

• 13

• 7

• 6

Evaluate the expression if a=3 and b=4.
4b - 5a

• 9

• 8

• 1

• 0

Evaluate the expression if a=3 and b=4.
a² + 1

• 17

• 10

• 33

• 11

Evaluate the expression if a=3 and b=4.
18 ÷ 2a

• 6

• 5

• 2

• 3

Evaluate the expression if a=3 and b=4.
ab ÷ 3

• 11

• 4

• 3

• 1

Evaluate the expression if a=3 and b=4.
2a + 8

• 31

• 14

• 16

• 12

An algebraic expression must have a number (constant), a variable, an __________.

• letter

• solution

• operation

• equal sign

12 ÷ 3x when x = 1

• 11

• 8

• 10

• 4

6c - 1 + 5c when c = 2

• 31

• 41

• 51

• 21

2x + 5y - 3 when x = 3 and y = 4

• 23

• 25

• 33

• 40