Answer:
6 hrs 33 minutes
Step-by-step explanation:
  2hr 57min
+3hrs42min
----------------------
5 hrs 99 minutes
But 1 hr = 60 minutes so subtract 60 minutes and add 1 hour
6 hrs 33 minutes
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
Sorry if I am wrong 
it is kinda confusing
 
        
             
        
        
        
a function that model the number of people that receives email in week t  is  .
 .
<u>Step-by-step explanation:</u>
Here we have , Tobias sent a chain letter to his friends . The number of people who receives the email increases by a factor of 4 in every 9.1 weeks , and can be modeled by a function P, which depends on the amount of time t weeks . Tobias initially sent letter to 37 friends . We need to write a function that model the number of people that receives email in week t . Let's find out:
Basically it's an exponential function as 
 , In question initial value is 37 & and for every 9.1 weeks there is increase in people by a factor of 4 i.e.
 , In question initial value is 37 & and for every 9.1 weeks there is increase in people by a factor of 4 i.e.
⇒ 
But , wait ! People increase in every 9.1 weeks not every week so modified equation will be :
⇒  
 
Therefore , a function that model the number of people that receives email in week t  is  .
 .
 
        
             
        
        
        
1. The probability that your mail is delivered before 2 pm is 0.9, so the probability that the mail is delivered at 2 pm or after 2 pm (so not before 2 pm) is 1-0.9=0.1.
Remark: 0.9=9/10=90/100=90%, and 0.1 is 10%
2. Probability of the mail being delivered before 2 pm for 2 consecutive days is 

3. take a look at the picture attached, the tree diagram is another method we could use.