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andriy [413]
3 years ago
5

Jane class is trying to raise money for their class trip to Washington D.C by holding a car wash.On Saturday the class washed 25

cars, charging $6.50 for each car.Their expenses for the day were $12.25.Which expression can Jane use to figure out how much money the class had left after the expenses were paid
Mathematics
1 answer:
Kobotan [32]3 years ago
6 0
They have $150.25 left over

(just do 25 times 6.50 then minus 12.25)
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3 years ago
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grin007 [14]
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Answer:

15: Yes, no, yes, yes, no; 16A: C = ($0.29)X + ($1.45)Y + ($2.50)Z; 16B: Yes

Step-by-step explanation:

For question 15: We need to multiply the widths and lengths given to see if they equal the area we are trying to achieve. Therefore, some of them work, and some do not.

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Part A: We'll set a variable for the number of each supply she can buy. Pencils will be represented by X, pens by Y and Notebooks by Z, and we'll represent total cost by C. The total cost will therefore be represented by C = ($0.29)X + ($1.45)Y + ($2.50)Z.

Part B: We'll plug the numbers of items she wants to buy into our formula and see if it comes out to less than $20. So in this case C = ($0.29)(3) + ($1.45)(4) + ($2.50)(2). Therefore, C = $11.67, which is less than $20, so she can afford her school supplies.

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