Could you please help me answer these problems?

Questions 1-5 are related to the following You own a local company that has special equipment for moving pianos. Your company has X f(x) enough equipment to handle three pianos in a day. The number of requests to move pianos is a 0.30 random variable with following distribution. - 0.40 The probability of three (3) requests to move pianos is 0.12 0.10 0.03 0.08 0.01 0.06 AUAWNAO 0.15 0.01 2 What is the probability that you will run out of equipment? That is, you receive three or more requests. a 0.17 0.15 0.08 0.05 3 The probability that some of your equipment will be idle is 0.85 0.88 0.90 0.95 4 What is the expected value of the number of requests? 1.05 1.12 1.15 1.23 5 What is the variance of the number of requests? 1.2989 1.4771 1.5945 1.7119