Answer:
To determine the amount of a radioactive substance left after a certain period of time, we can use the decay function A(t) = A(2.75), where A(t) represents the amount of substance remaining after t days, and A is the initial amount of the substance.
In this case, we are given that the initial amount of the substance is 4000 units. Therefore, we can substitute A = 4000 into the decay function to find the amount remaining after a specific time period.
A(t) = 4000 * (2.75)^t
To find the amount remaining after 5 days, we substitute t = 5 into the equation:
A(5) = 4000 * (2.75)^5
Calculating this expression gives us:
A(5) ≈ 4000 * (2.75)^5 ≈ 4000 * 237.3047 ≈ 949,218.8 units
Therefore, approximately 949,218.8 units will be left after 5 days.
Explanation: