What is the vertex form of the equation

Is the orthocenter of a triangle on the inside ?

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years