A system of equations and its solution are given below. System A
x + y = R
41 – 6y = 2
Solution: (5,3
Choose the correct option that explains what steps were followed to obtain the system of equations below.
System B
+ y = 8
10r = 50

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?