What is the general form of the equation for the given circle? x2 y2 − 8x − 8y 23 = 0 x2 y2 − 8x − 8y 32 = 0 x2 y2 − 4x − 4y 23 = 0 x2 y2 4x 4y 9 = 0

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?