A machine cuts a strip of carpet into two pieces. The length of the smaller piece is 5 meters greater than 4 the length of the larger piece. If the length of the smaller piece is 12 meters, the length of the bigger piece is
meters and the total length of the carpet is
meters.

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?