12. A circle has a center at C(2,5) and a point on the circle has coordinates A(8, 13). Could the point B lie on the same circle if lies at B(9.1)? Justify.

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?