Write g(x) = 40x + 4x2 in vertex form. write the function in standard form. factor a out of the first two terms. form a perfect square trinomial. write the trinomial as a binomial squared. g(x) = 4x2 + 40x g(x) = 4(x2 + 10x) (10/2)^2= 25 g(x) = 4(x2 + 10x + 25) – 4(25) g(x) = (x + – fill the blanks.

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?