What's the equation for a circle with a center of (-2, 1) and a radius of 3.

Step-by-step explanation:

The equation of a circle is written with the center and radius into the vertex form .

Here h = -2 and k = 1. Substitute these values with r = 3.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.