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# A scientist has 50 grams of a radioactive element. The amount of radioactive element remaining after t days can be determined using the equation . After two days the scientist receives a second shipme

A scientist has 50 grams of a radioactive element. The amount of radioactive element remaining after *t* days can be determined using the equation . 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 . Which of the following is an equivalent form of the expression for the amount remaining in shipment 2?