It takes sally 4 hours to deliver newspapers. if kathy works alone, it takes her 6 hours. how long would it take them working together to deliver all of the newspapers?

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

Add the fractions and simplify 1/2+ 1/3

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?