It’s actually science I can’t find the science subject pls help!

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2