Hi expert please answer both the parts will upvote. Hand written solution is not allowed.

The powerfull expert Hand written solution is not allowed

Please no written by hand solutions  One area of concern when it comes to Starlink is the cost. For example, at the beginning of February 2023, FiberOne, a broadband internet provider in Nigeria, was providing internet with speeds of up to 500Mbps, which is fast. The installation fee was N32,231 (about US$70) and the monthly subscription cost around N100,000 (US$220). Starlink in Nigeria, meanwhile, costs about N276,000 (US$599) once- off for the kit and installation, then charges a monthly subscription fee of about [N19,800] (US$43). Starlink is cheaper in the long term than both fibre optic and mobile internet providers. But can an average rural Nigerian household with a monthly income of less than N28,000 (US$60) afford it? Given that average incomes are similarly low in most rural and remote parts of Africa, there's a risk that Starlink's targeted users on the continent won't be able to use the service. The reason that Starlink is able to charge a lower monthly price for their…

The super Expert Hand written solution is not allowed

An item with a holding cost of $400 per year can be shipped by air in 1 day, costing $250, or by ground in 5 days, costing $150. Assuming the holding costs of $400 per year are based on an operational year of 365 days, which is cheaper and by how much?

plz solve both parts within 30-40 mins I'll give you multiple upvote

The minimum cost life of a new replacement machine is 6 years with a minimum equivalent annual cost of $6000. Given the existing machine’s marginal cost data for the next 4 years, when should the existing machine be replaced?                                                                                                          (a) After Year 1 (b) After Year 2 (c) After Year 3 (d) After 6 years

Since many U.S. Navy aircraft are at or near their usual retirement age of 30 years, military officials want a precise system to assess when aircraft should be taken out of service. A computational method developed at Carnegie Mellon maps in 3-D the microstructure of aircraft materials in their present state so that engineers can test them under different conditions of moisture, salt, dirt, etc. Military officials can then determine if an aircraft is fine, is in need of overhaul, or should be retired. If the 3-D system allows the Navy to use one airplane 2 years longer than it normally would have been used, thereby delaying the purchase of a $20 million aircraft for 2 years, what is the present worth of the assessment system at an interest rate of 8% per year?

The hero pro expert Hand written solution is not allowed please