Question

Help I don't understand.

Answer 1

Below

Explanation:

f(-5) = 85 * .95^(-5) = 109.9 mg remaining after -5 hours this does not fit the context of the problem

( domain ( values of 'x') should be 0 ---> infinity)

f(24) = 85 * .95^24 = 24.8 mg remaining after 24 hours this does fit the context of the problem