The length of a picture frame is (8u - 12) inches. It’s width is 3/4 of its length. Express the width of the picture frame in terms of u. Pls help I have no idea what to do

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Afootball is throw by a quarterback to a receiver

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?