Answer:
you would only need to add or multiply the numbers
Step-by-step explanation:
some of the equations could be- 
95+ x =190
95 x 2 =190
x / 2 = 190
 
        
             
        
        
        
Part b is $638.40
Part c is $1,641.6
        
             
        
        
        
Okay, so u just divide numerator and the denominator... you get 0.76.