I don't understand anything about angles may u help me please

Match each function with the corresponding function formula when h(x)=5-3x and g(x)=-3+5

Find the measure of the angle indicated in bold

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