Brian is a software salesman. let y represent his total pay (in dollars). let x represent the number of copies of math is fun he sells. suppose that x and y are related by the equation 1600+70x=y . answer the questions below. note that a change can be an increase or a decrease. for an increase, use a positive number. for a decrease, use a negative number.

what is the change in brian's total pay for each copy of math is fun he sells? $

what is brian's total pay if he doesn't sell any copies of math is fun? $

loloo

step-by-step explanation:

lololool

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.