Amodel is made of a car. the car is 8 feet long and the model is 10 inches long. what is the ratio of the length of the car to the length of the model? a)10: 8 b)48: 5 c)5: 48 d)8: 10

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?