Which of these choices represent a exponential pattern select all that apply.

a. division of skin cells every half hour.
b. small graph of y=x squared
c. y= 4 times 3 raised to x
d. y=2x raised to the 3

The correct answer for the question that is being presented above is this one: "A. Division of skin cells every half hour; B. Small graph of y=x squared; C. y= 4 times 3 raised to x; D. y=2x raised to the 3." These choices represent an exponential pattern.

Iam confused on this my self