Lauren took 1/4 of the pieces of birthday cake. list took 2/3 of what was left. holly took the remaining five pieces. how many pieces of cake were there to start with?

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

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?