Write an equation in function notation for each relation

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent