Ahmad opened a savings account with $9000 and was paid simple interest at an annual rate of 8%. When Ahmad closed the account, he was paid $1440 in interest. How long was the account open for, in years? If necessary, refer to the list of financial formulas. 1 years X Х 5 ?​

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?