Evaluating Addition Expressions

Evaluate x + 7 if x = 9

• -2

• 2

• 9

• 16

Evaluate x + y + z if x=1; y = 2 and z = -1

• -1

• 0

• 1

• 2

Evaluate 2a + 3b if a = 2 and b = 4

• 2

• 16

• 18

• 20

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

• 9

• 38

• -38

• -9

What is 6+x when x=53?

• 59

• 50

• 47

• 90642

Write an algebraic expression for "12 more than number". 

• x + 12

• 12x

• x - 12

Evaluate x + y + z + a - c when x=11, y = 3, z = 4, a = 14 and c=10?

• 22

• 32

• 2

• 17

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

• 9

• 38

• -38

• -9

How many terms are in the expression
3x + 2y + z

• 5

• 2

• 4

• 3

How many terms are in the expression
3a + 2b + c + 100

• 3

• 4

• 5

• 6