The table represents some points on the graph of an exponential function. The first column is labeled x. The numbers in the first column are negative 2, negative 1, 0, 1, 2. The second column is labeled f of x. The numbers in the second column are 12 point 5, 15, 18, 21 point 6, 25 point 92

Which function represents the same relationship?

f ( x ) = 15() x

f ( x ) = 18() x

f ( x ) = 15(
) x

f ( x ) = 18(
) x