2. Which of the following are solutions to -2.7 + x = -3.5? -3.5 + 2.7
-3.5 -(-2.7)
3.5 - 2.7
-3.5 - 2.7

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?