algebra

The expression: 553.7x + 27,966

Can be used to approximate the average annual salary in dollars of public school teacher in the year 1985 + x

What was the average teacher's salary in 1993?
In which year will the average salary reach $45,000?

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  1. plug and chug

    p(1993) = 553.7(1993-1985) + 27,966

    45000 = 553.7(x-1985) + 27,966

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