Does anyone know this? Please help!

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

An ant travels at a constant rate of 30cm every 2 minutes. at what speed does the ant travel per minute

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236