Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5) 8x2 + 8x − 13 8x2 − 8x + 13 8x2 − 8x − 13 8x2 − x − 13

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