2x + 5 2x
4x + 1
5) The figure shown is a trapezoid. Which expression represents the area of the trapezoid?
A) 3x + 3
B) 3x2 + 6x + 3
99 3x² + 3x+6
D) 6x2 + 6x

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?