Write a function ticketPrice $($age$,$ movieType$)$ for a movie theater that has two parameters: user's age and type of movie they want to watch $($regular or $3$D$).$

ticketPrice will return the price of the ticket.

Implement a pricing system where:

a$.$ Regular tickets are $$10$ for ages $13$ and older and $$7$ for ages $0-12$

b$.3$D tickets are $$15$ for ages $13$ and older and $$10$ for ages $0-12.$

Examples:

ticketPrice$(12,\text{'}3$d$\text{'})$ returns $10$

ticketPrice$(12,$'regular'$)$ returns $7$

ticketPrice$(20,\text{'}3$d$\text{'})$ returns $15$

ticketPrice$(20,$'regular'$)$ returns $10$