Question is in picture above

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.