Apainter must add the areas of two walls to determine the amount of paint needed. the area of the
first wall is modeled by 4x2 + 12x + 9, and the area of the second wall is modeled
by 36x2 - 12 x + 1. write a polynomial that represents the total area of the two walls.

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?

Factor the polynomial expression x6 – x3 – 20

Ana earns 2.5% simple interest on $2,000 in her savings account. she does not make any deposits or withdrawals. after 3 years, how much interest will ana have earned on her savings account?