Armand plans to save money every month for the next six months. The function f(x)=2x−1 represents the amount of money, in dollars, Armand will deposit into his savings account at the end of x months since the time he started saving. Which of the following represents the amount of money, in dollars, Armand deposits into his savings account at the end of 3 months since the time he started saving? Select all that apply. Responses f⋅3f times 3 f(3)f of 3 3f(x)3 f x 23−12 cubed minus 1 3(2x−1)3 times open paren 2 to the x th power minus 1 close paren