Out of 6 consonants and 2 vowels, how many words of 3 consonants and 1 vowels can be formed? Number of ways of selecting 3 consonants from 6

=Answer for part 1

Number of ways of selecting 1 vowels from 2

=Answer for part 2

Number of ways of selecting 3 consonants from 6 and 1 vowels from 2

=Answer for part 3

Number of ways of arranging 3 letters among themselves

=Answer for part 4

Hence, required number of ways

=Answer for part 5

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books