Ch 7, 6gb Review

The quotient of a number n and 2 is 8.

• n/2 = 8

• n -2 = 8

• 2n = 8

• n + 2 = 8

8 is 2 less than a number n.

• n/2 = 8

• n - 2 = 8

• 2n = 8

• n + 2 = 8

The product of a number n and 2 is 8.

• n/2 = 8

• n - 2 = 8

• 2n = 8

• n + 2 =8

A mathematical sentence that uses an equal sign to show

that two expressions are equal

• equation

• solution

• inequality

• solution set

Operations that “undo” each other, such as addition and subtraction or multiplication and division

• inverse operations

• solution of an equation in two variables

• independent variable

• dependent variable

A mathematical sentence that compares expressions.

• equation

• solution

• inequality

• solution set

The sixth grade has $986 in its class trip fund.

The total amount needed for the trip is $7045. Write an

equation you can use to find the amount a that needs to be raised for the trip.

• a + 7045 = 986

• a + 986 = 7045

• a = 7045/986

• 986a = 7045

You sell $85.75 worth of drinks at a concession stand by selling x small,

16 medium, and 21 large drinks.

Write an equation you can use to find the number of small drinks you sold.

• x + 1.5 + 1.75 = 85.75

• x + 16 + 21 = 85.75

• x + (1.50 x 16) +

  (1.75 x 21) = 85.75

• x + 1.5 + 16 +

  1.75 + 21 = 85.75

s + 27 = 37

• 47

• 7

• 10

• 64

a + 5.6 = 17.3

• 29

• 12.3

• 22.9

• 11.7