Barak spent $20 at the arcade this represents 10% of the money he earned working at the pizza parlor last week. how much money did he make at the pizza parlor last week?

What expression is equivalent to (2x-1)(x-3)?

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?