plz help on homework

1. The following figure is a probability density curve that represents the lifetime, in months, of a certain type of laptop battery. Ana=0.35 \"8:035 0612182430364248 a. Find the proportion of batteries with lifetimes between 12 and 18 months. b. Find the proportion of batteries with lifetimes less than 18 months. C. What is the probability that a randomly Chosen battery lasts more than 18 months