Copacabana beach in Rio de Janeiro is one of the most popular beaches in the world. P (t) models the number of people at the beach, t hours past midnight on a specific day. What does the statement P (10) = N mean?

There were N people at the beach at 10:00a. m.

P (t) is a function time, it is a dependent function which needs the value of t to be completed.

P (t) is the number of people at the beach at the beach in a t number of hours past midnight. t is a undefined and independent variable.

So P (10) = N means:

t = 10; 10 hours past midnight

P (10) = Model of the number of people at the beach 10 hours after midnight.

The numerical resolution of P (10) is equal to N, so:

N = number of people at the beach 10 hours after midnight.