The spreadsheet calculates a yearly pension. Users enter the pen. sion percentage as a percent in cell B1, the number of years
worked
in cell B2, and the last four working years' salaries in cells B3-B6.
That 4-year average salary is calculated and displayed in cell B7.
The yearly pension amount is calculated and displayed in cell B8.
a. Write the spreadsheet formula for cell B7.
b. Write the spreadsheet formula for cell B8.

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?