a. Given that number of hosts connected to the internet at year 2020 is M. If the number of hosts increases by 25% per year, how many host will be connected to the internet in year 2025? Give your answer in terms of M

b. Given a mesh network that has 10 host computers. Compute how many ports are required for each. How many unidirectional (data flows in one direction only) cables are required to build the mesh network?