Find (3 × 104) − (5 × 102). a) 2.905 × 102 b) 2.905 × 104 c) 2.95 × 102 d) 2.95 × 104

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000