The number of bacteria in a liquid medium doubles every day. There ar…

Question

Prompt

The number of bacteria in a liquid medium doubles every day. There are 72,000 bacteria in the liquid medium at the start of an observation. Which of the following represents the number of bacteria, y, in the liquid medium t days after the start of the observation?

y = \frac{1}{2} (72, 000)^{t}

y = 2 (72, 000)^{t}

y = 72, 000 (\frac{1}{2})^{t}

y = 72, 000 (2)^{t}