Can someone figure this out? I keep mixing up the radians on the unit circle and can’t for the life of me figure this one out. Thanks!

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer

Extremely mega ultra important question! plss answer as fast as you can you will get 84 points! the area of this right triangle is half the area of which of these rectangles?

Asap! will mark brainliest! ( respond asap, it's urgent! : )) what is the slope for equation y =-3x + 8