Minimum Wage. In 1995, the minimum wage was $4.25 per hour, and by 2010 it had increased to $7.25 per hour.

a) Find the slope of the line passing through the points (1995, 4.25) and (2010, 7.25)
b) Interpret the slope as a rate of change.
c) If this trend continues, estimate the minimum wage in 2015.