Heung-soo is responsible for checking a shipment of technology equipment that contains laser printers that cost $700 each and color monitors that cost $200 each. he counts 30 boxes on the loading dock. the invoice states that the order totals $15,000. which equation is not part of the system of equations that represents the number of each item? a. x + y = 30 c. (200x + 700y)30 = 15,000 b. 700x + 200y = 15,000

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −