jason frequently travels for work. this year he plans to make 15 trips to chicago. what is the total cost for the airfare? write an equation that represents the problem. the, solve the question

25 ! i need asap! ! ill mark brainliest!

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 −

Im so bad at fractions they are not my best math thing to work on