Achemistry set costing $38.50, marked up 32% on cost.

38.5(1.32)
$50.82 is the new cost after being marked up

X^2 - 4x +(4/2^2) + y^2 + 8y + (8/2^2) = -4 + (4/2^2) + (8/2^2)(x + 2)^2 + (y + 4)^2 = -4 + 4 + 16your center is (-2, -4) and the radius is the sqrt of -4 + 4 + 16 which is 4

There are two bc a studen that equals to 2