$152 shoes, 30% discount, 7.6% tax, what is the price?

What is the standard form of -5x^2+2x^4-11+x^3+3x

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?