On a map, 1 in. represents 50 mi. two cities are 3 1/2 in. apart on the map. how far apart are the actual cities?
a.53 1/2 m
b.150 1/2 m
c.175 m
d.150 m

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?