<u>Answer:</u>
t = 6.3 days
<u>Step-by-step explanation:</u>
The amount of initial mass is irrelevant when finding the half-life since the remaining mass is always 1/2 of the initial mass.

Taking
on both the sides to get:



t = 6.3 days
Angles A F and E should be the answer
"Increasing" and "decreasing" are references to what the y-values do when the x-values increase.
Attached is a copy of all four tables, marked with whether the y-values increased or decreased on each step (and it also shows how much that increase or decrease was.
The only table that does this is the top right table in the attachment, which is your second table.
Where is the rest of the question