Mathematics, 05.01.2021 01:30 allytrujillo20oy0dib
The sum of two numbers is 91. The greater number is 7 more than the smaller number. Which equation can be used to solve for the smaller number?
x(x + 7) = 91
x(x β 7) = 91
x + (x + 7) = 91
x β (x + 7) = 91
Question 10(Multiple Choice Worth 1 points)
(03.05 MC)
Annie needs $30 to buy a coat. She has saved $12 and plans to work as a babysitter to earn $6 per hour. Which inequality shows the minimum number of hours, n, that Annie should work as a babysitter to earn enough to buy the coat?
12 + 6n β€ 30, so n β€ 3
12 + 6n β₯ 30, so n β₯ 3
6n β₯ 30 + 12, so n β₯ 7
6n β€ 30 + 12, so n β€ 7
Question 11(Multiple Choice Worth 1 points)
(03.05 MC)
Cindy works in a cake shop and earns $42 per day. She earns an extra $4 for each cake she sells. If Cindy wants to earn at least $50 per day, which inequality shows the minimum number of cakes, n, that she should sell?
42 + 4n β€ 50, so n β€ 2
42 + 4n β₯ 50, so n β₯ 4
42 + 4n β₯ 50, so n β₯ 2
42 + 4n β€ 50, so n β€ 4
Question 12(Multiple Choice Worth 1 points)
(03.05 MC)
Travis wants to buy some CDs over the Internet. Each CD costs $8.01 and has a shipping cost of $9.95 per order. If Travis wants to spend no more than $50 for his CDs, which inequality shows the maximum number of CDs, p, that he can buy?
9.95p β 8.01p β€ 50, so p β€ 2
9.95p + 8.01p β€ 50, so p β€ 4
9.95 + 8.01p β€ 50, so p β€ 5
9.95 β 8.01p β€ 50, so p β€ 6
Answers: 2
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Which equation is true? i. 56 Γ· 4Β·7 = 82 Γ· (11 + 5) ii. (24 Γ· 8 + 2)3 = (42 + 9)2 neither i nor ii ii only i and ii i only
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|y + 2| > 6 {y|y < -8 or y > 4} {y|y < -6 or y > 6} {y|y < -4 or y > 4}
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