For all functions of the form f(x) = ax2 + bx + c, which is true when b = 0?
the graph will always have zero x-intercepts.
the function will always have a minimum.
the y-intercept will always be the vertex.
the axis of symmetry will always be positive.

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?

Which statement about 6x2 + 7x – 10 is true?

The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots.