What is 8.31 rounded to the nearest hundredths

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

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?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?