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Mathematics

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The eqaution R=10A-20 represents the revenue R (in dollars) you make by spending Adollars on advertising. Your revenue totaled $110. How much did you spend on advertising.

Answer :

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Today at 4:01 PM

110=10A-20
Add 20 to both sides
130=10A
Divide by 10
13=A
You spent $13

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