Answer:
9720 units
Step-by-step explanation:
There are multiple ways to find the answer to this problem, but the most logical way to find the answer if you don't know the equation is to simply take the original measurement, which is 40 units and multiply it by 3 until you reach day 6.
Below I have put the measurements for each day up to day 6.
day 1: 40 units
day 2: 120 units
day 3: 360 units
day 4: 1080 units
day 5: 3240 units
day 6: 9720 units
So, if the population of the culture of a bacteria is tripling each day and the culture measures 40 units at the beginning of day 1, then the culture will be 9720 units at the beginning of day 6.
If the time of day was confusing when solving this problem, technically it could be ignored since the time of day was consistent on both days.
