Answer:

Step-by-step explanation:
Given function:

As per question statement:
Initial temperature of bottle is 70  .
.
i.e. when time = 0 minutes, f(t) = 70 

After t = 3, f(t) = 42

Hence, the value is:

 
        
             
        
        
        
Answer:
a) 69.99
b) .20%
Your welcom ,.hb
Step-by-step explanation:
 
        
             
        
        
        
Answer:
B--StartFraction pi Over 2 EndFraction radians
Step-by-step explanation:
 
        
                    
             
        
        
        
You will need 27 quarters. 
1.25*3= 3.75
3.75+3= 6.75
There are 4 quarters in a dollar. 6 dollars = 24 quarters, plus 3 more quarters to equal the .75
 
        
             
        
        
        
First you find 4/5 of 8 and then 4/5of 7 and multiply them