The price of a 7​-minute phone call is ​$1.05. What is the price of a 15​-minute phone​ call? The price of a 15- minute phone call is $
plz help me O_O

With #! i’ve tried to figure it out but i can’t.

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

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