Answer:
see below
Step-by-step explanation:
Each age bracket defines a domain of the function. The function value is constant for that domain. This function gives admission price (P) as a function of age (a).
[tex]P(a)=\left\{\begin{array}{ccl}0&\text{for}&a\le5\\3&\text{for}&5<a\le18\\5&\text{for}&18<a<65\\4&\text{for}&a\ge65\end{array}\right.[/tex]
