The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses fewer than 600 minutes?

What would be the total cost of leasing a vehicle for four years that requires a security deposit of $1,000.00 (which would be withdrawn from your portfolio, which earns 9% per year., has monthly lease payments of $500.00, and has a mileage restriction of 20,000 with excess mileage resulting in a 10 cents per mile charge? Assume over the life of the lease you exceed the mileage limitations by a total of 8,000 miles.

A. $25,160.00 B. $24,000.00 C. $24,360.00 D. $24,800.00

Assume the gross amount of an invoice is $1,000 and a trade discount of 25% is allowed. The dollar amount of the trade discount is

a. $1,000; b. $750; c. $250; d. $25; e. none of these