Observe the expression below and select the true statement(s). the "10" in the third term is a coefficient. the "(7 + 2x)" in the first term is a factor. the "2" in the first term is a constant. the "3y" in the first term is a factor. the "x" in the second term is an exponent. the "9" in the second term is a coefficient.

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?