Jeremy's SUV gets 18 MPG and has a 28 gallon tank. How far can he get on a full tank of gas?

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?

Which of the following is true for the relation f(x)=2x^2+1

Which function has the domain x> -11