Michael has $2.25 worth of dimes and quarters. he has twice as many dimes as
quarters. write a system of equations that could be used to determine the number of
dimes and the number of quarters that michael has. define the variables that you use
to write the system.

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

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

What does independent variable and dependent variable mean in math?