Does this represent a function {(-1,-8), (7,1), (3,3), (1,1)}

Yes

Step-by-step explanation:

(x,y)

Since all the domains (x) are different, this set of number is a function. In a function, the range (y), can repeat.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !