Answer:
Heating and cooling costs might vary considerably.
<span>Inflection points are where the function changes concavity. Since concave up corresponds to a positive second derivative and concave down corresponds to a negative second derivative, then when the function changes from concave up to concave down (or vise versa) the second derivative must equal zero at that point. So the second derivative must equal zero to be an inflection point. But don't get excited yet. You have to make sure that the concavity actually changes at that point.</span>
Whole numbers with more digits are greater than whole numbers with fewer digits.
Unless there is a decimal making the number have more digits then the answer to the blank would be greater than.
1 -2 pretty sure thats the one
