Old MathJax webview

I forgot how to do this in class please explain to me how to solve them step by step

Scenario: A small auto repair shop has one mechanic that is dedicated to the installation of new mufflers. Customers arrive for a new muffler on average every 30 minutes. The mechanic can install mufflers on average at the rate of 3 per hour. Assume this service can be modeled as a single-server model. 1. 2/ hn On average, how many cars are in the system? 2-21hr . /Ar 2. On average, how long does a car spend in the system? Show your answer in minutes (one decimal place) 3. On average, how many cars are in the waiting line? Show your answer to two decimals. 4. On average, how long does a car spend waiting in the line? Show your answer in minutes (one decimal place) On average, how many cars are in the system? 2-21h0 On average, how long does a car spend in the system? Show your answer in minutes (one decimal place) On average, how many cars are in the waiting line? Show your answer to two decimals. On average, how long does a car spend waiting in the line? Show your answer in minutes (one decimal place) Scenario: A small auto repair shop has one mechanic that is dedicated to the installation of new mufflers. Customers arrive a new muffler on average every 30 minutes. The mechanic can install mufflers on average at the rate of 3 per hour. Assum this service can be modeled as a single-server model. 1. 2/ hn On average, how many cars are in the system? 8 - 21hr - 3/hr 2. On average, how long does a car spend in the system? Show your answer in minutes (one decimal place) 3. On average, how many cars are in the waiting line? Show your answer to two decimals. 4. On average, how long does a car spend waiting in the line? Show your answer in minutes (o decimal place)