Fill in the blank: 12(8x - 4) = __X - 48

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?

Alakefront cottage that is 30 feet high casts a shadow on the water. how long is that shadow if a 16-foot-high truck parked nearby casts an 8-foot shadow?

A. 15 degrees b. 45 degrees c. 30 degrees d. 60 degrees