$\"\"$

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The Freshman Class Student Council wanted to raise money by giving car washes.

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The students spent $\"\"$ on supplies and charged $\"\"$ per car wash.

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a.

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Write an equation.

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Let $\"\"$ be the number of cars and $\"\"$ be the earnings.

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The equation is $\"\"$ .

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$\"\"$

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b.Graph:

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Graph of the equation $\"\"$ .

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$\"Linear$

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$\"\"$ c.

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How much money did they earn after $\"\"$ car washes.

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$\"\"$ (Original equation)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Multiply)

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$\"\"$ (Subtract: $\"\"$ )

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They earned $\"\"$ by washing $\"\"$ cars.

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$\"\"$

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d.

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How many car washes are needed for them to earn $\"\"$ .

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$\"\"$ (Original equation)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Add $\"\"$ to each side)

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$\"\"$ (Apply additve inverse property: $\"\"$ )

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Cancel common terms)

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They need to wash $\"\"$ cars to earn $\"\"$ .

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$\"\"$

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a. The equation is $\"\"$ .

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b.Graph of the equation $\"\"$ .

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$\"Linear$

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c.They earned $\"\"$ by washing $\"\"$ cars.

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d. They need to wash $\"\"$ cars to earn $\"\"$ .