C = 2(PI)r multiply 2 x 3.14 x (whatever the radius is!
        
             
        
        
        
For this case we have that each student takes 8 \ frac {3} {4} minutes to perform and play 3 songs. Then, we convert the mixed number to a fraction:

Thus, each student takes minutes.
 minutes.
If there are 9 students in the recital then we have:
 minutes.
 minutes.
Thus, the recital lasts at least 78.75 minutes.
Answer:
The recital lasts at least 78.75 minutes.
 
        
             
        
        
        
What do you need help with? it helps us to know the question!
        
             
        
        
        
106.78/.05=2135.6
21356*.05=106.78
        
             
        
        
        
Answer:  The best estimate for the amount of money she saves to buy clothes = $ 562.5
Step-by-step explanation:
Given: Breanna saves 75% of her earnings to buy new school clothes. 
Earnings for Breanna = $ 750
The amount of money she saves to buy clothes = 75% of 750
= 0.75 x  750   [75%= 0.75]
= $ 562.5
Hence, the best estimate for the amount of money she saves to buy clothes =  $ 562.5