The other practices would one 1 hour.
If he practices a total of 5 hours:
5-2=3 for mondays practice
3 ÷ 3 = 1 for the rest of the practices
1, 4, 9, 16, 25, 36, 49, 64, 81, 100
$57.50÷10=5.75 so that means for every 1 hour you get payed 5.75
Step-by-step explanation:
Let the angle near point A be
.
Let the angle near point B be
.
Let the angle near point C be
.
Let the external angle near point A be
.
Let the external angle near point B be
.
Let the external angle near point C be
.
According to exterior angle property,exterior angle of an angle is the sum of other two angles.
So,

According to angle sum property,the sum of angles in the triangle add to 
