Question 9 (5 points)
(03.04 LC)
The sum of two numbers is 52. The greater number is 4 more...
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Mathematics, 01.12.2021 23:00 zavadskipaulo1oyt4og
Question 9 (5 points)
(03.04 LC)
The sum of two numbers is 52. The greater number is 4 more than the smaller number. Which equation can be used to solve for the smaller number? (5 points)
a
x β (x + 4) = 52
b
x + (x + 4) = 52
c
x(x + 4) = 52
d
x(x β 4) = 52
Question 10 (5 points)
(03.05 MC)
Gavin needs $80 to buy a fish tank. He has saved $8 and plans to work as a babysitter to earn $9 per hour. Which inequality shows the minimum number of hours, n, that Gavin should work as a babysitter to earn enough to buy the fish tank? (5 points)
a
8 + 9n β₯ 80, so n β₯ 8
b
8 + 9n β€ 80, so n β€ 8
c
9n β₯ 80 + 8, so n β₯ 9.8
d
9n β€ 80 + 8, so n β€ 9.8
Question 11 (5 points)
(03.05 MC)
Natalie works in a toy shop and earns $43 per day. She earns an extra $3 for each toy she sells. If Natalie wants to earn at least $70 per day, which inequality shows the minimum number of toys, n, that she should sell? (5 points)
a
43 + 3n β₯ 70, so n β₯ 9
b
43 + 3n β€ 70, so n β€ 9
c
43 + 3n β₯ 70, so n β₯ 24
d
43 + 3n β€ 70, so n β€ 24
Question 12 (5 points)
(03.05 MC)
Chad wants to buy some books over the Internet. Each book costs $10.01 and has a shipping cost of $9.96 per order. If Chad wants to spend no more than $50 for his books, which inequality shows the maximum number of books, p, that he can buy? (5 points)
a
9.96p β 10.01p β€ 50, so p β€ 1
b
9.96p + 10.01p β€ 50, so p β€ 2
c
9.96 β 10.01p β€ 50, so p β€ 3
d
9.96 + 10.01p β€ 50, so p β€ 4
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Answers: 3
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