The local bodega sells bags
of Cheetos and bags of Takis.
Cheetos cost $2 per bag and
Takis cost $1 per bag. One
day, the bodega sold 30 bags
of Cheetos and Takis for a total
of $54. How many of each type
I of snack did the bodega sell
that day?

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?