In the conditional probability equation, P( A | B ) = P( A and B ) / P ( B ), where P ( B) > 0, what does P (A | B) mean? What does " | " mean?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

What is the least common factor of 6 and 8