Test Review

Solve for x:

• x = yb - v
• x = by - v
• x = by + v

Solve:
C = 2πr, for r

• C/(2π) = r
• C + 2π = r
• C - 2π = r
• 2πC = r

Which choice models this situation?

Lisa finished a race in 58 seconds. This was 4 seconds faster than her best practice time. What was Lindsey's best practice time?

• t + 4 = 58

• t - 4 = 58

• 4t = 58

• t/4 = 58

Pizzazz Publications is having some books printed. The printer charges $800 plus $5 per book. What equation could help me find how many books can be printed for $4,000?

• 800 + 5x = 4000
• 800x + 5 = 4000
• 4000 + 5x= 800
• 800 + 5 = 4000

Which expression matches this phrase?

"The sum of half a number and 5"

The two figures have the same perimeter. Write an equation to determine the value of x?

• 3.5x – 5 = 13.5x

• 23.5x + 2 = 13.5x - 3

• 23.5x – 2 = 13.5x + 3

• 3.25x + 1 = 5.5x + 3

What do we call a number sentence that has an equal sign?

• expression
• solution
• equation
• constant

What do we call a letter in math that represents an unknown number?

• coefficient
• variable
• term
• expression

What do we call the number that is being multiplied by a variable?

• Variable
• Term
• Expression
• Coefficient