Need help ASAP DUE IN ONE DAY thanks

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

In the diagram of circle o, what is the measure of zabc?

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