38 pts BRAINLIEST HELP ASAP

Choose the correct sum of the polynomials (3x2 - 5x-8)+(5x + 7x + 3).
8x2 + 2x + 5
28 - 12x-11
2x² + 12x-5
8x + 2x-5

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?