Sammy needs $15,000 in order to afford to pay for his bills each year. He is going to invest in a savings account that promises an APY (Annual Percentage Yield) of 7%.
He wants to be able to retire and draw enough money to survive, without working,
for ten years. Rounded to the nearest penny, how much does Sammy need to have
before he can retire?

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?