Answer:
3*(n + 3) - 2n
(n +3) is the starting point. and an increase in 3 times is 3*(n + 3) - 2n
The midpoint would be (-2, -1)
-1, -24
Step-by-step explanation:
-9-(-8)
double negative = positive
-9+8=-1
21-45=-24
where r is radius and h is height