1. Una empresa industrial deposita una cierta cantidad de capital (dólares) en un banco a plazo fijo. Al cabo de t años la cantidad a
recuperar vienen dado por la siguiente función:
C(t) = 156250(1+4e-21)-1

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?