A 12-year annuity pays $3,300 per month, and payments are made at the end of each month. The interest rate is 12 percent compounded monthly for the first seven years, and 10 percent compounded monthly thereafter. What is the present value of the annuity?

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

6

step-by-step explanation: