Suppose that two people standing 6 miles apart both see the burst from a fireworks display. After a period of time, the first person standing at point A hears the burst. Two seconds later, the second person standing at point B hears the burst. If the person at point B is due west of the person at point A and if the display is known to occur due north of the person at point A, where did the fireworks display occur? Note that sound travels at 1100 feet per second.

Suppose that there are initially 75 bacteria in a colony and after 3 hours, there are 300 bacteria in the colony.Assuming exponential growth, how many bacteria are there after 7 hours? Round to the nearest whole number.

A series of locks manages the water height along a water source used to produce energy. As the locks are opened and closed, the water height between two consecutive locks fluctuates. The height of the water at point B located between two locks is observed. Water height measurements are made every 10 minutes beginning at 8:00 a.m.