What is the difference between angle of incidence and angle of reflection?

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

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?