64, -48, 36, -27. Which formula can be used to describe the sequence? O f(x + 1) = f(x)
O f(x + 1) = -f(x)
O f(x) = f(x + 1)
O f(x) = -f(x + 1)

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?