HELP ME IM TIMED !! I WILL GIVE BRAINLIEST !

Copy these equations on a separate piece of paper and solve for x. Justify 6 points
your solution by writing in Exponential form. Submit a photo of your
solutions. *HINT*You should be able to do all these problems without a
calculator. *

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 −