Apublishing company has boxes of books with 50 bucks in each box there are 345 boxes of books in a stock how many books does the publishing company have to show your work

Anyone know? will mark brainliest if correct!

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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