What is the difference of the fractions? Use the number line to help find the answer. 1 3 54 1-18 16 14 -12 -10 -8 -6 -4 42 20 20 20 20 20 20 20 20 20 0 2 4 ZOTIZO 6 8 2012/01 14 2012020 X 2020 19 20 11 20 19 20

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?