20. suppose you need to re-administer this injection at the point when the concentration is less than 0.5%. if the first injection was given at 8: 00 am, what time should the next injection be given?

Given that the function



models the concentration of a medication in the bloodstream (as a percent), hours (h) after its injection into muscle tissue.

The number of hours it will take for the concentration of the injection to be less than 0.5% is given by:



Given that the first injection was given at 8:00 am, the time the next injection should be given is 2 pm.