Unit test review 2

Ms. Anderson wrote the equation 10t - 4t + 3t = 8 on the board and asked the students to write an equivalent equation. The table below shows the responses from the students.

                       Name of Student               Equation

             Michelle                                        3t = 8

             Piotr                                              6t = 8

             Ronnie                                          -1t = 8

            Tanisha                                           9t = 8      

Which student wrote an equation equivalent to Ms. Anderson?                

• Michelle

• Piotr

• Ronnie

• Tanisha

Which expression is equivalent to 9p - 3p + 2?

• 8p

• 14p

• 6p + 2

• 9p - 1

Which expression is equivalent to 7b + 4b - 1b?

• 2b

• 4b

• 10b

• 12b

Which method should be used to solve for x?

2.5x = 5.7

• distributive property

• addition property of equality

• combining like terms

• division property of equality

Which step shows the result of applying the subtraction property of equality? 1/4 ( 12x + 8 ) + 4 = 3

Step Solution

1 3x + 2 + 4 = 3

2 3x + 6 = 3

3 3x = -3

4 x = -1

• step 1

• step 2

• step 3

• step 4

Melissande collected 14 bottles on Saturday and 9 bottles on Sunday for recycling. On Monday, she took all the bottles to the recycling center, where they paid her a certain amount, b, for each bottle. However, she had to pay thee recycling center a one-time service fee of $0.25. If she left there with $3.20 for the bottles, what is the value of b?

• $0.14

• $0.15

• $0.23

• $0.69

At the beginning of the week, Naveen has 87 trading cards. On Monday, he gets 9 more. On Tuesday, he gives 16 away. On Wednesday, he is given 3 by a friend. On Thursday, he sells all his card to a collector. The collector pays him a rate of c for every card that Naveen has. If Naveen earn $124.50 from the sale, what is c, the rate that the collector pays for each card?

• $1.08

• $1.50

• $41.50

• $83.00

Jeannie works 5 hours on Tuesday, 3 hours on Wednesday and 4.5 hours on Thursday. If h represents her hourly pay rate, which expression below shows the amount she earned?

• 12.5

• 12.5h

• 12.5 + h

• 12.5/h

Kale is solving the equation 15r - 6r = 36. What is the value of r?

• 2

• 4

• 15

• 27

What is the value of k in the equation below?

5k - 2k = 12

• 1.2

• 1.71

• 3

• 4