George's parents are saving for his college fund. They put $5,000 into an interest bearing account with a compound interest rate of 5.5%. George's parents want to determine what the balance of his college fund account will be after 15 years. Using the formula A = P (1 + r) Superscript t, which is the correct substitution for the formula? A = 5,000 (1 + 0.055) Superscript 15 A = 5,000 (1 + 0.055) 15 A = 5,000 (1 + 0.015) Superscript 5.5 A = (5,000 + 0.055) + 1 Superscript 15