Answer:

Step-by-step explanation:
Given the exponential decay function 
When
then

so the initial amount is 
The exponential decay function
has the decay factor 
In your case, the eexponential decay factor is 
4.5 is the answer.
First you multiply 9.6x3.2 which gives us 30.72
Then you divide 138.24 by 30.72 which equals 4.5
Hope this helps
Answer:
X>50 because 5 people spent less than 10 bucks
Step-by-step explanation:
10x5 = 50, so it cant be above 50$
Answer:
A
Step-by-step explanation:
It is a rational number because it is a terminated decimal and can be expressed as a fraction.