The population of a city in 2005 was 18,000. by 2010, the city’s population had grown to 45,000. economists have determined that the population growth follows an exponential model. if they are correct, what is the projected population for 2015?

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.

y=sec x is the correct answer

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