Sherri sells photos of athletes to baseball, basketball, and hockey fans after their
games. Her regular price is $10 per
photograph, and she usually sells about
30 photographs. Sherri finds that, for each
reduction in price of $0.50, she can sell an
additional two photographs.
a) Total sales revenue is the product of the
number of units sold and the price.
Make an algebraic model to represent
Sherri's total sales revenue.
b) At what price will Sherri's revenue be
$150?
c) At what price will her maximum
revenue occur?

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?

Use sigma notation to represent the following series for 9 terms.

Sasha delivers newspapers to subscribers that live within a 4 block radius of her house. sasha's house is located at point (0, -1). points a, b, c, d, and e represent the houses of some of the subscribers to the newspaper. to which houses does sasha deliver newspapers?