Im pretty sure it would be 4^-2 because when you’re multiplying two different exponents you add them. i hope i helped!
It's f(x) = sin2x
Because when you multiply x by any number greater than 1, the graph will shrink.
Try but pi/2 in the equation you will get sin(pi) which is 0. And that satisfies the gragh.
Your answer is 60 of course