A toy company is going to issue new ID codes to its employees. Each code will have one letter followed by five digits. The digits and will not be used. So, there are letters and digits that will be used. Assume that the digits can be repeated. How many employee ID codes can be generated?

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?