Find the surface area of the regular pyramid

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

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What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?