I am doing this math problem but I do not get it at all this I it Sam and Jesse can wash 5 cars each hour. They work for 7 hours each day over 2 days. How many cars did Sam and Jesse wash?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft