Natalie is a softball coach. she has a private pitching lesson with Kasey. Kasey's mom pays

Natalie %11 per hour plus a $6 tip
the correct equation was 11x + 6 = 39
How many hours was the lesson

The equation 11x + 6 = 39 can be simplified to 11x = 33 by subtracting 6 from both sides. Then, dividing both sides by 11 gives x = 3.

Therefore, the lesson was 3 hours long.