If r is the radius of a circle and d is its diameter, which of the following is an equivalent formula for the circumference C = 2 pie r?

A. C= pie d
B. C= 2 pie d
C. C=2 pie d^2
D. C = 2 pie rd

A

Step-by-step explanation:

because r is 1/2 of d so you would have 1 d instead of 2 r

step-by-step explanation:

here's what happens:

1) the graph of f   = x^2 is shifted 2 units to the right.

2) the resulting graph is reflected in the x-axis, so that the parabola now opens down.

3) this final result is transformed up by 5 units.

the solution is 12x-6y