2x^4-5x^3-3x^2+x+6 find all positive real zeros, negative real zeros, and imaginary zeros

What number is 7 units left of -15?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply