Write m2 - 20m + 72 = -3 in vertex form.

Step-by-step explanation:

just see attached answer

The half life of the medication, in hours is 2.3 hours

Solution:

Half life of medications means the time in which the medication become half of its original value i.e. From 10 milligrams to 5 milligrams

The time in which medication become 6.5 milligram  is 3 hours

To become 1 milligram the time taken will be 3 divided by 6.5

So, the half life time [5 milligram] will be, time taken for 1 milligram multiplied by 5

Thus it takes 2.3 hours for half life of medication