After a certain medicine is ingested, the number of harmful bacteria remaining in the body declines rapidly. The relationship between the elapsed time t, in minutes, since the medicine is ingested, and the number of harmful bacteria remaining in the body, hminute(t), is modeled by the following function: hminute(t) = 500,000,000 * (0.2)ᵗ Every second, the number of harmful bacteria remaining in the body decays by a factor of 0.99.