What’s the circumference of a & b in terms of pi?

a. C = 2(17)pi= 34pi

b. d/2= 5pi/2= 2.5pi

C= 2(2.5)pi= 5pi

y = (25/4)(x + 5)^2

Step-by-step explanation:

1.  Interchange x and y, obtaining:  x = -5 + (2/5)√y

2.  Solve this result for y:  x + 5 = (2/5)√y

    Squaring both sides, we get (x + 5)^2 = (4/25)y

     Multiplying both sides by (25/5) cancels out the (4/25) coefficient:

      y = (25/4)(x + 5)^2       This is the inverse of the given function.