SOLUTION: Median weekly earnings for women with some college for an associate degree. 1980.......$231 2013.............$657 Using today's dollars, the data in the bar graph can be describ

Algebra ->  Linear-equations -> SOLUTION: Median weekly earnings for women with some college for an associate degree. 1980.......$231 2013.............$657 Using today's dollars, the data in the bar graph can be describ      Log On


   

Question 1195830: Median weekly earnings for women with some college for an associate degree.
1980.......$231
2013.............$657
Using today's dollars, the data in the bar graph can be described by the mathematical model
W = 13n + 231,
Where W represents median weekly earnings n years after 1980.
Does the formula underestimate or overestimate the median weekly earnings in 2013? By how much?
Found 2 solutions by MathLover1, math_tutor2020:
Answer by MathLover1(20849) About Me  (Show Source):
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given:
1980.......$231
2013.............$657
The function that estimates the median weekly earnings n+years after 1980+is given by:
W+=+13n+%2B+231


from 1980+ to 2013 is 2013-1980+=+33 years, hence the estimate is given by:

W+=+13%2A33+%2B+231+=+660

Since 657+%3C+660, the formula underestimates+the median weekly earnings in 2013+by $3.


Answer by math_tutor2020(3816) About Me  (Show Source):
You can put this solution on YOUR website!

The answer should be "overestimates by $3" because the estimating function outputs 660 which is larger than 657 found in the data table.