00:00 Ms. Sampson recorded the percentage change in her students
quarter grades after entering the scores from the students' topic tests.
Which student's change would be represented by the point farthest from 0 on a number line?
Student
Change in Quarter Grade
3.76
Andre
Brenna
5.48
Christopher
-6.15
Delfina
3.33
Andre
Brenna
Christopher
Delfina

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?