I need help with 1-8 please

Restaurant open for dinner You own a restaurant. Net revenue on a given day can be modeled as a uniformly distributed random variable X, which takes on values from 100 and 400. 1. In the graph of the probability density function (pdf) below, what is the value of \"a\"? Integer 2. Continued. What is the value of "b\"? Integer 3. Continued. What is the value of \"height\"? Three decimals In the graph of the cumulative distribution function below, what is the value of "height"? Continued. What is the value of \"c\" (intercept on the vertical axis)? Fxlxl Calculate the 80th percentile of daily net revenue. This is the value such that the probability is 0.8 that daily revenue is less than this value. Two decimals What is the probability that on any given day, net revenue will exceed 325? Two decimals Net revenue has the same probability distribution every day. Net revenues on different days are independent. What is the probability that net revenue will be less than 325 every day for a week? (Your restaurant is open seven days a week.) Four decimals