Evaluating/Writing Algebraic Expressions

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42 less than a number x

• 42 - x
• x - 42

Evaluate x + 8 if x = 2

• 6

• 8

• 10

• 12

Evaluate 2n + 7 if

n = 7

• 34

• 21

• 14

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

• 3
• 12
• 1
• 0

Evaluate when a = 15:
2(a - 5) + 2

• 22
• 27
• 14
• 7

eight plus triple the number of shirts
Let s = number of shirts

• 8 + 3s
• 8 + s
• 3s - 8

eleven less than twice the number of people
Let p = number of people

• 11 - 2p
• 2p - 11

Which phrase describes this expression 16-y

• The quotient of 16 and y

• y added to 16

• the product of 16 and y

• y less than 16

The quotient of z and 20 is shown in which expression?

• z+20

• z/20

• 20z

Evaluate 3x + 8   if x = 2

• 13
• 14
• 15
• 16