A square cube has 3 red sides and 3 yellow sides. After rolling it 30 times, it landed on red 19 times and yellow 11 times. Using this observed probability, how many times would the cube land on red if the cube was rolled 300 times?
times

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?