Evaluate the function f(x)=x+4 when x=3​

Name the most appropriate metric unit for each measurement like the mass of cow

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?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?