Which quadratic equation crosses the x-axis at 4 and -9?

a. y=x^2-5x-36
b. y=x^2+5x+36
c. y=x^2+5x-36
d. y=x^2-5x+36

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Which best explains why this triangle is or is not a right triangle?

Find the probability that -0.3203 < = z < = -0.0287 find the probability that -0.5156 < = z < = 1.4215 find the probability that 0.1269 < = z < = 0.6772