Ivan earns $30 per week for his allowance, plus $15 for each lawn he mows. He wants his earnings to equal $120 each week.
Write an equation to represent his weekly earnings. Use the equation editor if necessary.

Answer this question only if you know the answer! 30 points and

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

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?