algebra
posted by linda .
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?

algebra 
Steve
plug and chug
p(1993) = 553.7(19931985) + 27,966
45000 = 553.7(x1985) + 27,966
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