Unit 3 Review

Unit 3 Review

Steps for Solving Equations

• Distribute!!!

• Combine Like-Terms

• Undo addition or subtraction first

• Undo multiplication or division

• Check your answer

Multiple Choice

Solve the equation:
^x/₃+ 10 = 15

• 75
• 15
• 25
• 5

Multiple Choice

64.6 = 6.8p

• p = 9.5
• p = 439.28
• p = 57.8
• p = 71.4

Multiple Choice

f ÷ 0.8 = 7

• f = 6.2
• f = 8.75
• f = 5.6
• f = 7.8

Multiple Choice

t - 0.7 = 9

• t = 9

• t = 9.7

• t = 8.3

• t = 0.7

Multiple Choice

t - 0.7 = 9

• t = 9

• t = 9.7

• t = 8.3

• t = 0.7

Multiple Choice

-11 + 3(b + 5) = 7

• 1
• -1
• 3
• -3

Multiple Choice

Solve:
3(x - 2) = 18

• 6.7
• 4
• 8
• -4

Multiple Choice

Simplify the Expression:

9xy + 3x - 6xy + 2x

• 3xy + 5x

• 8xy

• 8x

• 15xy + 5x

Multiple Choice

2xy can be combined with 3xy²

• True

• False

Multiple Choice

Simplify the expression: 7v + 2 + 12 + 2v

• 23

• 23v

• 9 + 14v

• 9v + 14

Multiple Choice

• 8

• -8

• 32

• 12

Multiple Choice

In 8r - 3 , the VARIABLE is ___

• 8

• r

• -

• 3

Multiple Choice

In 8r + 3 , the CONSTANT is ___

• 8

• r

• +

• 3

Multiple Choice

In 8r - 3 , the COEFFICIENT is ___

• 8

• r

• -

• 3

Multiple Choice

5y - 7 is an example of an ____________

• expression

• equation

Multiple Choice

5y = 7 is an example of an ____________

• expression

• equation

Multiple Choice

A number used to multiply a variable. It is the number "attached" to a variable.

• constant

• coefficient

• term

• expression

Multiple Choice

A number that does not change (it stands alone without any variable attached)

• constant

• coefficient

• variable

• term

Multiple Choice

A part of a mathematical expression separated by addition or subtraction symbols

• constant

• term

• equation

• variable

Multiple Choice

To replace variables with values and then simplify using the order of operations

• term

• expression

• evaluate

• constant

Multiple Choice

Combination of numbers, operations, and variables which can be evaluated for a given value of the variables

• equation

• expression

• term

• coefficient

Multiple Choice

A value that when substituted for the variable will make an equation true is a ____________.

• Term
• Constant
• Evaluation
• Solution

Multiple Choice

What are inverse operations?

• Absolute values
• Opposite operations used in isolating a variable
• Operations used for only inequalities
• Unknown quantity represented by a letter or symbol

Multiple Choice

Which definition best fits an equation?

• Mathematical statement containing one or more variables
• Mathematical statement containing numbers and operations
• Mathematical statement containing an equal sign ( = ).
• What's an equation?

Multiple Choice

To solve an equation, the goal is to __________ the variable on one side.

• Evaluate

• Leviate

• Isolate

• Reciprocate

Multiple Choice

To solve an equation, the goal is to __________ the variable on one side.

• Evaluate

• Leviate

• Isolate

• Reciprocate

Multiple Choice

Solve for x.

• x = 21
• x = 7
• x = −21
• x = 4

Multiple Choice

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5
• Add 6 to both sides and multiply both sides by 5
• Subtract 6 from both sides then multiply both sides by 5
• Subtract 6 from both sides then divide both sides by 5

Multiple Choice

What is the first step to solve this equation:

- 3x -11 = 44

• Add 3 to both sides

• Subtract 11 from both sides

• Add 11 to both sides

• Divide 3 on both sides.

Multiple Choice

2(u - 9) = 4

• 10
• 11
• 12
• 13

Multiple Choice

- 4T = - 44

• - 11
• 11
• - 40
• 48

Multiple Choice

Which equation has x = 2 as a solution?

• 3 + x = 10
• 11 + x = 13
• 4x = 32
• 5x =25

Multiple Choice

-30 - 5x = 120

• x = 18
• x = -18
• x = 30
• x = -30

Multiple Choice

5 = 7s - 9

• 2

• 6

• 7

• 8

Multiple Choice

What strategy do we use to help us solve word problems?

• RIDE (read, identify, determine operation, evaluate)

• RIDE (read, interpret, describe, evaluate)

• WALK (words, are, like, kittens)

• RUN (read, underline, numbers)

Multiple Choice

Scott works on cars. He charges $35 for each car plus $7 per hour. Write an equation that represents this scenario if Kylie's car bill was $63.

• 7x + 35 = 63

• 7x = 63

• 7x - 35 = 63

• 35x + 7 = 63

Multiple Choice

Emily earns $14 per hour. Which equation represents how many hours she worked to earn $112?

• 14h = 112

• h + 14 = 112

• 14 / h = 112

• h - 14 = 112

Multiple Choice

A garden contains 75 flowers, each of which is either pink or white. If there are 37 pink flowers, how many white flowers are there?

• 37f = 75

• 75f = 37

• 37 - f = 75

• 37 + f = 75

Multiple Choice

Evaluate 8a - b if a = 10 and b = 6

• 74

• 38

• 1000

• 9000

Multiple Choice

Evaluate 2a + 4b

if a = 10 and b = 6

• 20

• 24

• 44

• 4

Multiple Choice

Evaluate 2a + 4b

if a = 10 and b = 6

• 20

• 24

• 44

• 4