show formula used to solve please

Which of the following expressions is incorrect? (a) The future worth of a present amount, (F/P,i,n) = 1/(P/F,i,n) (b) The future worth of an annuity, (F/A, i, n) = 1/(A/F,i,n) (c) The present worth of an annuity, (P/A,1,n) = 1/(A/P,i,n) (d) (A/F,i,n) x (P/A,1,n) = (P/F,i,n) (e) (A/F,i,n) - i = (A/P, i,n) How much money must you invest today in order to withdraw $1,000 per year for 10 years if the interest rate is 12%? (a) $4,800 (b) $5,650 (c) $5,808 (d) $6,145 e) $10,000