Aclerk in a health food store makes bags of trail mix. the amount of trail mix in each bag is listed below: 1/4lb,1/4lb,3/4lb,1/2lb,1/4lb,3/4lb ,3/4lb,3/4lb,1/2lb,1/4lb1/2lb, and 1/2lb. what is the total weight of the trail mix used in all bags?

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?