El señor y la señora baker acompañaron a algunos niños a un concierto. Cada entrada de adulto cuesta $7 y los niños a la mitad del precio de adultos. Escribe una ecuacion lineal del costo total, C dolares, en funcion del numero de niños, N

Ihave trouble finding the nth term of a linear sequence

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie