What does the word discipline mean in the following sentence Brads discipline in eating healthy and exercising is admirable. please help

What percent of the circle below is shaded?

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

Math each whole number with a rational, exponential expression