What’s the correct answer ??someone please answer this

For each proportion find the unknown number x 1/5/8=×/15

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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