A study of 225 advertising firms revealed their income after taxes Income after Taxes Under $1 million $1 million to $20 million $20 million or more Number of Firms 130 64 31 a. What is the probability an advertising firm selected at random has under $1 million in income after taxes? (Round the final answer to 2 decimal places.) Probability b-1. What is the probability an advertising firm selected at random has either an income between $1 million and $20 million, or an Income of $20 million or more? (Round the final answer to 2 decimal places.) Probability b-2. What rule of probability was applied? Rule of Probability (Click to select) 3