How long will it take an airplane to travel 1,250 kilometers if it is traveling at 150km/hr

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

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?

Can someone check if i did this correct. it’s number 4 if you’re wondering.