(Modeling) Solve the problem.
Average Wages The average hourly wage (adjusted to 1982 dollars) was $7.66 in 1990 and $8.27 in 2009. (Source: U.S. Census Bureau.)
(a) Find a point-slope form of a line that passes through the points (1990, 7.66) and (2009, 8.27).
(b) Interpret the slope.
(c) Use the equation from part (a) to approximate the hourly wage in 2005. Compare it with the actual value of $8.18.
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