Can someone help me pls!

Given that anna wants to spend less than $60 for the subscription and only full month subscriptions are offered, what is the maximum number of months that ana can subscribe

Find the value of the cosine for angle a

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online