What is the value of x? 3(x−2)+5x=18 what is the value of z? 53=−19z+5+7z what is the value of n? −6.5(n−5)=18.2 what is the value of r? 3/5(r−7)=1 what is the value of t? 3.5(t+6)=7

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?