Date: Directions: Read. Write an equation and solve each problem.
1. Pete walks his dog, Salty, twice a day. Their morning walk is one and a half
times shorter than their evening walk. At the end of the week, Pete tells his
dad, "I walked Salty 21 miles this week!" How long is their evening walk?

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?