for a certain type of heater, the increase in gas bills is directly proportional to the temperature setting (in fahrenheit). if the gas bills increased by $20 when the temperature setting is increased by 4 degrees fahrenheit, by how much will expenses increase when the temperature setting is increased by 10 degrees fahrenheit

a framing bias

step-by-step explanation:

rodrigo is subject to a framing bias i believe.

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.