<h2>
Hello!</h2>
The answer is: 23.77 hours
<h2>
Why?</h2>

Where:
Total(t) is equal to the amount for a determined time (in hours)
<em>Start</em> is the original amount
<em>t </em>is the time in hours.
For example, it's known from the statement that the bacteria double their population every 15 hours, so it can be written like this:

To calculate how long it takes for the bacteria cells to increase to 300, we should do the following calculation:

So, to know if we are right, let's replace 23.77 h in the equation:
Total(t)=100*2^\frac{23.77}{15}=299.94
and 299.94≅300
Have a nice day!
Answer:
multiplicative inverse of both 300 and 0.054
16.2
1.96 divided by 4 is 48.5 cents round it to get 49 cents
so 49 cents per pound
You add 70,50, and 90 together then you do seperately 30, and80 (add) lastly take that amount then divide that by your first sum