What is the equation of the directrix of the parabola whose equation is x2 - 30y = 0

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

Abag has more green balls than blue balls, and there is at least one blue ball. let bb represent the number of blue balls and let gg represent the number of green balls. let's compare the expressions 2b2b and b + gb+g. which statement is correct? choose 1

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels