Find the circumference use 3.14 for pie

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

What is the y intercept of f(x)=(1/2)^x?

Find the area of a parallelogram with base 15 yards and height 21 2/3