Nine less than four times a number equals fifteen

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

Find the y-intercept and x-intercept for the equation 5x-3y=60 what is the y-intercept

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2