The remaining credit after 30 minutes of calls is $21.40, and the remaining credit after 52 minutes of calls is $18.76. What is the remaining credit after 67 minutes of calls?

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

Can any one me with the answers to these questions asap?

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