Sports salaries. Refer to Table 4. a. Let x represent the number of years since 1990 and find an exponential
regression model y = ab^x for the average salary in the NBA. Use the model
to estimate the average salary (to the nearest thousand dollars) in 2022.
b. The average salary in the NBA in 1997 was $2.2million. How does this
compare with the value given by the model of part (a)?

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?