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3 years ago

8

Help me!!!!!!!!!!!!!!!!

1 answer:

Leokris [45]3 years ago

7 0

Answer:

D. 25x² - 20x + 4

Step-by-step explanation:

The formula for the area of a square is: A = s², where s = a side length of the square since all side lengths of a square are equal. In this case, the side length is represented by '5x', so the original area is A = (5x)² = 25x².

Since Kelly is cutting off one inch from each side of square, this will actually take off 2 total inches from each side, making the new side length '5x - 2'. We can now put this expression in for the values of 's' in our formula for area and use distributive property to solve:

A = (5x - 2)² = (5x - 2)(5x - 2)

Distribute using FOIL: 25x² - 10x - 10x +4 or 25x² - 20x + 4

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Step-by-step explanation:

Given

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Required

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The equations are:

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$x = 160 - 105$

$x = 55$

Hence:

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Mechanic 2: $105 per hour

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