Help pls 6x+7 with work

Adeposit of 5500 at 6% for 3 years equals

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

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