math

You find a sales receipt from a store that shows the total price as \$40, and the total amount paid including sales tax as \$42.

a. Write an equation you can use to find the sales tax rate which is r. what is the equation so I tried all things I could think of but it doesn't work like 42=40+r

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1. Solving your equation gives you \$2.00.

2/40 = 0.05 = 5%

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Ms. Sue
2. You find a sales receipt from a store that shows the total price as \$40, and the total amount paid including sales tax as \$42.

a. Write an equation you can use to find the sales tax rate rr.
An equation is 42=42=
.What should the equation be?

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3. 40=40+40r

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4. I got the Answer as 40+40r

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r=5%

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7. The answer if you have big ideas math is none of those.

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8. If you have big ideas it is 40+40r

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9. 42= 40+40r

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10. Yes it is 40+40r

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