Answer: $25 spent
Step-by-step explanation: the boy spent $15/total. 
15/total=3/8
Divide by common factor: $15/3=$5 (1/8 total money
$5x8=$40
$40-$15=$25 spent
 
        
             
        
        
        
Answer:
32 meals
Step-by-step explanation:
24/.75 = 32
- Please let me know if you need a further explanation
 
        
             
        
        
        
Answer:
0.1151
Step-by-step explanation:
Given that a laptop company claims up to 10.1 hours of wireless web usage for its newest laptop battery life. However, reviews on this laptop shows many complaints about low battery life. A survey on battery life reported by customers shows that it follows a normal distribution with mean 9.5 hours and standard deviation 30 minutes. 
If X is the battery life then X is N(9.5, 0.5)
(we convert into one unit for calculations purpose here hours)
a) the probability that the battery life is at least 10.1 hours
=
we get the probability that the battery life is at least 10.1 hours is 0.1151
 
        
             
        
        
        
0.45M+40
The M stands for the amount of minutes he went over.
        
                    
             
        
        
        
Answer:
Student that play, 
baseball: 18
Both= 30
basketball= 17
Step-by-step explanation: