What the answer for 7x-(-3x)

He concluded that a heavier object dropped from the same height as a lighter object will land

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?