What is the number of diagonals that intersect at a given vertex of a hexagon, heptagon, 30-gon and n-gon?

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Evaluate cos2θ for cosθ = square root of 3/2