Answer:
You need to post the statements, but I can still help you. Exponential decay functions usually are written in this manner: (1-x)^t
figuer this out -10-6= your answer
-6( 2-r ) = 42
-12 + 6r = 42
6r = 42 + 12
6r = 54
r = 9
The answer is 3.
Hope it helps..
