Answer: The total amount of bacteria present after 
 hours is 
.
Step-by-step explanation:
It is given that the Strep throat is caused by Streptococcus bacteria. The amount of bacteria multiplies at a rate of 10^13 per 10^2 hrs. 
 hours = 
 bacteria
The amount of bacteria in one hours is,

The amount of bacteria after 
 hours is,



Therefore, the total amount of bacteria present after 
 hours is 
.