Which is the best value for money

250 grams of grapes at €2.00

200 grams of grapes at €1.50

What is the volume of the sphere shown below with a radius of 3?

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.