Algebra Review

What is the algebraic expression for the phrase "5 more than 3 times a number?"

• 8
• 5 + 3x
• 5 + 3 x 10
• 3 + n + 5

What is the algebraic expression for "a number tripled is equal to 18?"

• 18 + 3 = n
• 6
• 3 x 6 = 18
• 3n = 18

What is the expression for this word problem: six feet less than the width (use w for width).

• w - 6
• 6 / w
• 6 - w
• w / 6

What is the expression for this word problem: five years less than Tracy's age (a=Tracy's age).

• 5a
• 5/a
• a - 5
• 5 - a

Simplify this expression (combine like terms):
 x + x + x + x

• 4 - x
• 4x
• x
• x+4

Evaluate the expression if a=3.
4a

• 7
• 12
• 43
• 17

Solve the equation:  20 = n - 12

• 8
• 32
• -8
• 120

Define the variable:
Nine weeks from now, Susan hopes to buy a bicycle that costs $180.  How much money must she save per week to buy her bicycle?

• x = Amount of money she has now
• x = Amount of money she has to save each week
• x = how many weeks it will take to buy the bicycle
• x = Amount of money she has left to save

7 less than a number d

• 7 - d
• d - 7

What does 4⁵ mean?

• 4x4x4x4x4
• 4x5
• 5x5x5x5