Write and solve the appropriate exponential equation:
228 = 16(r)^4, where r is the change per hour in the number of bacteria:
228
------ = r^4 = 14.25.
16
Taking the fourth root of both sides, we get: r = 1.94 (answer)
1/2, 3/8, 5/16, 9/12, and 30/64. Hope this helped!
The smaller rectangle is like a smaller version of the big one, and 8 divided by 2 is four... so I think you need to divide 18 by 4, which is 4.5, so C is the answer
