M/-5 = 4 one or two step equation

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.