Help! The problem is on the PNG.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

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?

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18