14. Multiply: −1/3⋅−5/8
(1 point)
Responses
815
8 over 15
524
5 over 24
−5576
negative 5 over 576
−524
negative 5 over 24
Question 2
15. Find the product.
-5(-10)(12)
(1 point)
Responses
120
120
-600
-600
600
600
-12000
-12000
-6000
-6000
Question 3
16. If the Walkers deducted $850 each month last year from their checking account to pay for childcare, what was the effect on their checking account balance?(1 point)
Responses
-$10,200
-$10,200
-$850
-$850
$10,200
$10,200
$850
$850
Question 4
17. Deborah hired Nick to remove leaves, aerate the lawn, and plant 3 flower beds. If Nick spends 4.2 hours working on Deborah’s lawn, what is his hourly earnings for the job?
Hint: Each price listed in the chart is a flat fee for the service.
(1 point)
Responses
$375.00
$375.00
$93.75
$93.75
$79.76
$79.76
$89.29
$89.29
Question 5
18. Over the past 8 months, Devon made payments for a total of $936 to pay for internet service. The service is the same amount each month. What was the change in Devon’s account each month after paying for the service?(1 point)
Responses
-$117
-$117
$936
$936
-$936
-$936
$117
$117
Question 6
19. After exposure to an amazing stretching machine, Alexander’s height increased by 108 inches over 6 minutes. His height increased by the same amount each minute. What was the effect on Alexander’s height each minute?(1 point)
Responses
-18 inches
-18 inches
108 inches
108 inches
18 inches
18 inches
-108 inches
-108 inches
Question 7
20. Find the product.
−4/7(−11/2)
(1 point)
Responses
−4114
negative 41 over 14
227
22 sevenths
−227
negative 22 sevenths
4114
41 over 14
Question 8
21. Find the product.
9(−3/7)(−1/3)
(1 point)
Responses
−97
negative 9 sevenths
37
3 sevenths
−37
negative 3 sevenths
97
9 sevenths
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The correct answers are:
14. Multiply: −1/3⋅−5/8 = 5/24
15. Find the product: -5(-10)(12) = 600
16. If the Walkers deducted $850 each month last year from their checking account to pay for childcare, what was the effect on their checking account balance? -$10,200
17. Deborah hired Nick to remove leaves, aerate the lawn, and plant 3 flower beds. If Nick spends 4.2 hours working on Deborah’s lawn, what is his hourly earnings for the job? $89.29
18. Over the past 8 months, Devon made payments for a total of $936 to pay for internet service. The service is the same amount each month. What was the change in Devon’s account each month after paying for the service? -$117
19. After exposure to an amazing stretching machine, Alexander’s height increased by 108 inches over 6 minutes. His height increased by the same amount each minute. What was the effect on Alexander’s height each minute? 18 inches
20. Find the product: −4/7(−11/2) = 22 sevenths
21. Find the product: 9(−3/7)(−1/3) = 1