After taking a dose of medication, the amount of medicine remaining in a person's
bloodstream, in milligrams, after x hours can be modeled by the function
f(x) = 85(0.78)”. Find and interpret the given function values and determine an
appropriate domain for the function.

  3.62 units

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relation between the side adjacent to the angle and the hypotenuse:

  Cos = Adjacent/Hypotenuse

  cos(34°) = AB/AC

  AC = AB/cos(34°) = 3/cos(34°) ≈ 3.619 ≈ 3.62 . . . units

For right triangle ABC with A an angle of 34°, AB of length 3, and AC the hypotenuse.