Find the simplest interest. principal = $870 interest rate = 3% time = 9 months
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer: $889.58
Step-by-step explanation:
⇒<u>Equation:</u>
A = P(1 + rt)
Turn 3% into decimal and you get 0.03, then 9 months/ 12 months = 0.75 years. 
<h2><u>
WORK ↓</u></h2>
⇒A = 870(1 + (0.03 × 0.75)) = 889.575 
⇒A = $889.58
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Hmm, the slope is undefined. But like what exactly are you looking for as an answer?