Luis Schambach is shopping for a 15 -year mortgage for $150,000. Currently, the Fortune Bank is offering an 8.5% mortgage with 4 discount points; the Northern Trust Bank is offering an 8.75% mortgage with no points. Jeff is unsure which mortgage is a better deal and has asked you to help him decide. (Remember, each discount point is equal to 1% of the amount financed.) a. What would be the total interest paid on each loan? Mortgage amount = #\#\#\#\#\#\# b. Taking into account the closing points, which bank is offering a better deal and by how much