Q is the midpoint of PR.
PQ = 4x - 7 and QR = 3x + 1.
Find the length of PR. W

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?

Write the factored form of this trinomial 9x^2+18x-7

What is the slope of the line that has an equation of y equals x -3