Acarpenter had 28 nails from previous job and needs to buy more. a store has 7 boxes of nails and each box contains 100 nails. the carpenter needs to buy at least 3 boxes. the number of nails the carpenter will have after purchasing n boxes is represented by a function. f (n) = 100n + 28what is the practical domain of the function? a) all integers from 3 to 7, inclusiveb) {328, 428, 528, 628, 728}c) all real numbers from 3 to 7, inclusived) all real numbers

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?