Studies have shown that the concentration (in mg \' cm3 of blood) of aspirin in a typical person is related to the time t (in h) after the aspirin reaches maximum concentration by the equation In c = In 19 - 0.52t. Solve for c as a function of t. Write your answer without any logarithms. Solution ln c - ln 19 = -0.52t Thus, ln ( c / 19) = -0.52t c/19 = e-0.52t c = 19 e-0.52t Hope this helps.