Question

Suppose you started with 100 bacteria, but they still grew by the same growth factor. Write the function rule for this situation

y=100 x 8^x

y=100 x 4^x

y=8 x 100^x

y=4 x 100^x

Answer 1

y = 100 * n^t
when t = 0 , y = 100 * n^0 = 100*1 = 100
when t = 1, y = 100 n
when t = 2 , y = 100 * n*n etc
Therefore either of the first two work
4 or 8 are growth factor choices. You did not specify if it grows to 4 times in a generation or 8 times

Answer 2

It was A. Thank you so much!