Sarah wiggum would like to make a single investment and have $3 million at the time of her retirement in 25 years. she has found a mutual fund that will earn 3 percent annually. how much will sarah have to invest today? if sarah invests that amount and could earn a 13 percent annual return, how soon could she retire, assuming she is still going to retire when she has $3 million?

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?