Which of the following is not one of the three major structures of coral reefs? A) planulae B) fringing C) barrier D) atoll

Perhaps saving more money for their retirement and getting better life insurance for jackie. and trying to spend less money on unnecessary expenses always . 

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .