Can someone please help

Prove that 16^4-2^13-4^5 is divisible by 11.

Why is x= 4 a solution to the proportion 14/x 56/1 6

Ven the functions, f(x) = 5x2 - 3x + 1 and g(x) = 2x2 + x - 2, perform the indicated operation. when applicable, state the domain restriction. (f - g)(x) 3x2 - 4x + 3 3x2 - 2x - 1 3x2 - 4x - 1 3x2 - 2x + 3