Anybody good with trig or algebra 2?

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.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

What is the solution of log2  (3x  -  7)  =  3? 4 5