Angela is building a playground for his backyard. The playground blueprint says it has 2 in by 4 in rectangular base. The scale of the blueprint is 1/3 = 3 feet. If Angela is building the playground according to the blueprint, what would be the area of the base of the playground in square feet?

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?