Pedro empresta o capital inicial de R$ 3.000,00 para André, cobrando juros compostos de 3% ao mês. André após os meses combinado, ele paga a quantia, o montante de R$3275,18 ao André. Quanto tempo foi combinado para André quitar sua dívida?

If you answer 2+2 you will get over 80 points

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

What’s the range cuz i can’t find it?