Xto the 2nd power = -16 quadratic function

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Which two undefined geometric terms always describe figures with no beginning or end?

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?