Final answer:
Michelle will save $450 in interest by choosing Bank B over Bank A for her loan. We get this answer by calculating the difference between the interest received from Bank A to Bank B.
Step-by-step explanation:
The question pertains to Michelle, who needs to calculate the savings in interest over the length of each loan. If Bank A will charge her $2430 in interest, and Bank B will charge her $1980 in interest, we calculate the difference by subtracting the smaller interest amount from the larger one:
Interest saved = Interest from Bank A - Interest from Bank B
Interest saved = $2430 - $1980 = $450
Therefore, Michelle will save $450 by borrowing from Bank B instead of Bank A.