Answer:
The area of a circle is : π (Pi) times the Radius squared : A = π r 2 or, when you know the Diameter: A = (π /4) × D 2 or, when you know the Circumference: A = C 2 / 4 π
-2? maybe
Step-by-step explanation:
15+6x=75
15 is the starting fee and it is 6$ per class so it would be 6x+15=75
