Answer:
1) $53.50
2)$85.10
3) $57.60
4)1.5
4) $2511.25
Step-by-step explanation:
for 1,2,3,5 take the original amount and the percentages to set up something like this
$50X1.07
which gives you the entire answer in a simple step
 
        
                    
             
        
        
        
Answer:
9
Step-by-step explanation:
6y/x
6*3/2
18/2
9
 
        
                    
             
        
        
        
Take the deritiivive

it is zero at pi/4 and it repeats at every pi 
minimum at where slope goesfrom negative to positive
so at 5pi/4 and 13pi/4 so at every 2pi interval
evaluate origial at 5pi/4

=

=

 or aprox 1.22509
 
        
        
        
Answer:
Step-by-step explanation:
.012