This is a A-C question if you don't want to answer these questions please don't attempt to answer I will post B and C in comments

Pharmaceutical firms invest significant money in testing any new medication. After the drug is approved for use, it still takes time for physicians to fully accept and start prescribing the medication. The acceptance by physicians approaches a limiting value of 100%, or 1, after time t, in months. Suppose that the percentage P of physicians prescribing a new cancer medication is approximated by the equation below. Complete parts (a) through (c). P(t) = 100 (1 - e -0.36t) a) What percentage of doctors are prescribing the medication after 4 months? % (Do not round until the final answer. Then round to the nearest tenth as needed.)