Margo can purchase tile at a store for $0.99 per tile and rent a tile saw for $36. At another store she can borrow the tile saw for free if she buys tiles there for $1.59 per tile. How many tiles must she buy for the cost to be the same at both stores? Margo must buy ??? tiles for the cost to be the same at both stores.

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 −