Which statement describes the graph of f(x) = 4x3 -- 28x4-32x + 64?
the graph crosses the x-axis at x = 4 and touches the x-axis at x = -1.
the graph touches the x-axis at x = 4 and crosses the x-axis at x = -1.
the graph crosses the x-axis at x = -4 and touches the x-axis at x = 1.
the graph touches the x-axis at x = 4 and crosses the x-axis at x = 1.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.