3. Jemma had her birthday party at the pottery studio. It cost $32 to use the party room and $6.25 per friend for their pottery pieces. Write an equation to find out how many friends did Jemma
have at her party if she spent $82? Use f as your vairable.
Enter your answer

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?