Pls find side a! is due soon!

Answer the questions in the attachment. a rescue helicopter is at point a and a rescue boat is at point e. the helicopter pilot spots boats in distress at points d and c,with angles as marked in the diagram. figure abce is a rectangle. the altitude of the rescue helicopter, represented by ae, is 5000 feet.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)