Pythagoras work out x 15.9m and 7m

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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?

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits