Answer:
15
Explanation:
So, to solve this I made this is 400> or equal to 250+9.5x. X being the number of times she goes to the practices.
400> or equal to 250+9.5x
-250 -250
150 > or equal to 9.5x
/9.5 /9.5
15.789> or equal to x
If you then simplify that, you get 15 because you can't necissarily take .789 of a lesson.
Hope this helps!