A Maths Dictionary for Kids Quick Reference is a device friendly html version with definitions and detailed examples for over 950 math words and terms.
The statistics about the average cost of a haircut vary, but a few years ago American Salon, a publication for beauty industry professionals, reported the numbers as $21 for a cut in a salon with fewer than 6 chairs, and $44 for a salon with more than 13 chairs.
I decided to break it down, and explain the costs involved in a haircut and also explain why the average stylist isn't ripping you off by charging $20 - $40 for a haircut. I'd be willing to bet that some of the expenses in a hair salon just might surprise you.