Unit 3 Review

Which algebraic expression best represents the following verbal expression?
 
9 times a number minus 2

• 2 - 9n
• 9  - 2n
• 2n - 9
• 9n - 2

Which algebraic expression best represents the following verbal expression?
 
two more than three times a number

• 3n - 2
• 3n + 2
• 3 + 2n
• 3 - 2n

5 less than the product of 7 and a number

• 7s - 5

• 5 - 7 + s

• 7(s - 5)

• 5 - 7s

• 4

• -4

• 16

• 1.6

• 56

• 6

• 40

• 384

• -11

• -13

• 13

• 11

• 4

• -21

• 10

• 21

• c = 3
• c = 6
• c = 7
• c = 18

• 1
• 7
• 4
• 3

What does isolate the variable mean?

• Make sure the variable is not alone.
• Get the variable by itself.
• Make the variable do a dance.
• Double the variable