Which scenario is modeled by the equation (x) (0.6) = 86 dollars and 46 cents?

Sorry guys but as you have a small brain

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?