Acar loses its 15% of its current value every year. what is the value of a car that was bought for $20,000 in two years?

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?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom