The double number line shows that 5 pounds of avocados cost $9. 0
Avocados
5
(pounds)
Cost
H
(dollars)
0
9
Based on the ratio shown in the double number line, what is the cost for 1 pound of avocados?
S

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?