What happens if you divide a negative number by a positive number?

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

What is the factored form of the following expressions? d^2 – 13d + 36

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.