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Mila [183]
3 years ago
11

Isaac shoveled 9 of his neighbors' driveways after a snow storm. He charged $25 for a short driveway and $45 for a long driveway

. Which equation can be used to find y, the total amount that Isaac charged when x of the driveways are short?
Mathematics
1 answer:
e-lub [12.9K]3 years ago
5 0

Answer:

y($) =  405- 20x

Step-by-step explanation:

Number of short driveways = x

Number of long driveways = 9-x

Fee per long driveway = $45

Fee per short driveway= $25

Total amount = y

y ($) =  25x + 45 (9-x)

      =  25x  + 405 -45x

      = 405- 20x

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Answer:

Nifal received $ 4 for washing the first car.

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Step-by-step explanation:

The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:

x + y = 9

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Then, by eliminating y:

x + (x+1) = 9

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2\cdot x = 8

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The earning for the second car is: (x = 4)

y = x +1

y = 4 + 1

y = 5

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Step-by-step explanation:

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