An amount of $31,000 is deposited in a bank that pays interest at the rate of 4%/year, compounded annually. what is the total amount on deposit at the end of 6 years, assuming there are no deposits or withdrawals during those 6 years? (round your answer to the nearest cent.)

You want the compound Amount, A.  P is $31000; r is 0.04, and t is 6 yrs.

A = P (1+0.04)^t   becomes    A = $31000(1.04)^6, or
                                                A = $39224.89.  Pretty good deal?

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for