Y = x² – 10x + 21
What is the equation for the Axis of Symmetry?
Write in "x = number" form.

There are 4 cups in a quart and 4 quarts in a ganon.jug of water? . how many cups are in a 5-gallon jug of water?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?