The base number (the first number) is what will be multiplied and the exponent is how many times you're multiplying the number, so for this it would be
Karen is financing $291,875 to purchase a house. she obtained a 15/5 balloon mortgage at 5.35%. what will her balloon payment be? a. $220,089.34 b. $219,112.46 c. $246,181.39 d. $230,834.98