What is the x- coordinate of the solution to the system of equations? 0.1x+0.5y=0.6 0.4x-1.2y=-5.6

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?