Emma buys and sells truck parts. she bought two tires for $35.00 each and later sold them for $65.00 each. she bought three rims for $75.00 each and later sold them for $136.00 each. she home get five headlight covers for $4.00 each and later sold them for $15.00 each. what is emma's total profit?

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?