Astore is having a sale on 200 dvd movies. some of the movies are being sold for $10 and some of them are being sold for $12. if the store made $2200 after selling all 200 dvds, how many $12 dvds were sold?
a) 50
b) 75
c) 100
d) 150

What is the value of x in the diagram below?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?