Which expression is equivalent to (2/5x+1 1/5)?

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?