Beware! Do not purchase anything from Vista Higher Learning.
Their platform is impossible to learn on. If your class requires you to purchase any materials from Vista Higher Learning, drop the class and run! I've never been so frustrated within a single day of starting a college course. This platform is for lazy teachers that get kickbacks from VHL to push their substandard products.
They will scam you and then ignore all of your requests. They will refuse to refund you for any purchase, no matter the circumstances. Look up their reviews and complaints on BBB before considering purchasing their products. They are a scammy company that will rip off your money and you'll have zero chance of getting it back.