Intro to Algebraic 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 algebraic expression for "Twice x, decreased by 9?"

• 9 - 2x
• 2 + x - 9
• 2x - 9
• 2x / 9

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: 6 more hours per week than Theodore studies (t=hours that Theodore studies).

• 6 / t
• 6t
• t - 6
• 6 + t

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):  6x + 3 - 4x - 1

• 10x + 4

• 2x + 2

• 2x - 2

• 10x + 2

Simplify this expression (combine like terms):
3x + 3 - 1

• x - 1
• 3x + 4
• 3x + 2
• 5x

Simplify this expression (combine like terms):
6y + 5y + y - 2

• 10y
• 11y + y - 2
• 12y - 2
• 13y

Simplify this expression (combine like terms):
6a + 1 - 2a

• 4a + 1
• 7a - 2a
• 8a + 1
• 6a + a