the perimeter of a rectangle is 168 ft. the ratio of the length to the width is 11: 1. find the width of the rectangle.

a.
7 ft
b.
12 ft
c.
14 ft
d.
77 ft

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?