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.
For example the median expected annual pay for a typical Hairdresser/Hairstylist in the United States is $31,459 so 50% of the people who perform the job of Hairdresser/Hairstylist in the United States are expected to make less than $31,459. Source: HR Reported data as of March 31, 2017.