Jennifer made 70 cookies to sell to her friends. she sold 20 more sugar cookies than chocolate chip cookies. if all of the cookies were sold, how many were sugar cookies?

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?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.