The park behind james's house used to have a bike trail that was 12.347 kilometers long. last year, the trail was reduced to 9.432 kilometers to make space for a meditation garden. what is the difference in the lengths of the old and the new bike trails? 2.547 kilometers 2.746 kilometers 2.874 kilometers 2.915 kilometers

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?