Find the unknown length in the triangle. 15cm and 18cm

Which of the following graphs could represent a cubic function?

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?

Marion bought 14 packages of plastic frog and lizard fishing lures. she bought frog lures in packages of 4 and lizard lures in packages of 6 for a total of 72 lures. how many of each lure did marion buy?