The graph of y = is reflected over the y-axis and then translated down 2 units to form f(x). Which is the graph of f(x)? please help!

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Ineed in figuring out this problem.

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?