Bryanna is packing to go to college. She packed 6 Nintendo Switch games and 9 brand new textbooks in a box. The total weight of the box was 21 pounds. Realizing the box still had room, and how strong she is, she put 2 more games in the box, the new weight of the box is 22 pounds. What is the weight of one textbook and the weight of one game?
How did you get your answer?

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?