In 2013, the national debt was approximately 1.8 x 1013
dollars. In 2014, the debt
grew by 3.3 x 1011 dollars.
Find the total debt at the end
of 2014. Give your answer in
scientific notation.

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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?

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?