HELP ME!!! Triangle ABC has vertices located at A( 0, 2), B (2, 5), and C (-1, 7).
Part A: Find the length of each side of the triangle. Show your work. (4 points)
Part B: Find the slope of each side of the triangle. Show your work. (3 points)
Part C: Classify the triangle. Explain your reasoning. (3 points)

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?