What is the difference between the exponets 4x and x4

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Kim took out a $55,000 loan for college she is borrowing money from 2 banks bank a charges an interest rate of 8% and b charges an interest rate of 11% after one year kim owes 5000 in interest how much money did she borrow from bank a.