CAN YALL PLEASE HELP WITH QUESTION 2 ASAP I DONT UNDERSTAND

For which pair of functions is (gof)(a)=|a|-2?

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.