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Mars2501 [29]
2 years ago
14

If Jan can buy 12 copies of a certain book $40, what is the unit rate for cost per copy? How much would it cost her to buy 18 co

pies at the same rate?
Mathematics
2 answers:
goldfiish [28.3K]2 years ago
7 0
40/12=3.33
3.33x18= 59.94
crimeas [40]2 years ago
3 0
3.33 since we know 12 is for 40 we can set up an equation
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Step-by-step explanation:

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Joe bought 5 apples and 4 bananas for $6. Dawn bought 3 apples and 6 bananas for $6.30. How much foes each apple and each banana
zepelin [54]

Answer:

Apple = $0.6

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Step-by-step explanation:

Let us represent Apple by A and Banana by B

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For Dawn

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To eliminate A, Multiply equation (1) by 3 and equation (2) by 5

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divide through by -18

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substitute 0.75 in equation (1)

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subtract 3 from both sides

5A + 3 - 3 = 6 - 3

5A = 3

divide through by 5

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3 years ago
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irakobra [83]
The statements that are correct are A and E. A because the y-intercept for y=5x+12 is 12 and the table of values it is 5. E is correct because the rate of change for the table of values is 24 and y=5x+12, it is 5.
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3 years ago
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