Find the measure of the indicated angle to the nearest degree?

Please hurry

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30