when rotating a figure, which is equivalent to a 3/4 -turn counterclockwise rotation?
a. counterclockwise 180 b. clockwise 276 c. counterclockwise 90 d. clockwise 90

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

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?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25