The answer is 3. I hope this helps!
        
                    
             
        
        
        
Answer:
you must add 2 to the equation
Step-by-step explanation:
 
        
             
        
        
        
Answer is 72566.52
77000-5203=71797
3840-571=3269
71797+3269=75066
75066-2500=72566
72566+0.52=72566
        
                    
             
        
        
        
Your answer would be c. 18,6 
        
             
        
        
        
x*(1.035) + (4,200-x)*(1.045) = 4,374.00
1.035x + 4,389.00 -1.045x = 4,374.00
15.00  = .01x
x = 1,500  so x (1,500) invested at 3.5% and  
(4,200 - 1,500) (or 2,700) invested at 4.5%