You randomly survey men and women about whether they plan to watch a new television show on Sunday afternoon. A total of 15 men plan to watch the new show and a total of 12 women do not plan to watch the new show. A total of 40 women are surveyed. A total of 42 people do not plan to watch the new television show. How many people did you survey?

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?