In a marching band, there are 14 saxophones and 21 trumpets. Heather says the ratio of trumpets to saxophones is 14:21. Audrey disagrees and says the ratio is 3:2. Who is correct?

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

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

6x + 3y = -6 2x + y = -2 a. x = 0, y = -2 b. infinite solutions c. x = -1, y = 0 d. no solution