There are 9 students in a class. the teacher chooses 2 students to go to the
library. the order in which they are chosen does not matter. how many ways
are there to choose the students?

Which matrix multiplication is possible?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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