<span>Bartering can be more time-consuming than trading with money.
Hope it helps.
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I believe this answer is true.
        
             
        
        
        
This is true, it is a misunderstandment
        
             
        
        
        
Answer:
$67.1 million
Explanation:
Given that,
Projected benefit obligation at the beginning of 2021 = $51 million
Service cost = $18 million
Retiree benefits  = $7 million
Projected benefit obligation at December 31, 2021:
= Beginning of 2021 + Service cost + Interest cost - Retiree benefits 
= $51 million + $18 million + (10% × $51 million) - $7 million
= $51 million + $18 million + $5.1 million - $7 million
= $67.1 million
 
        
             
        
        
        
Positives: 
Credit card rewards.
Fraud protection.
Travel benefits
Negatives:
Interest charges.
Late fees.
Potential for credit damage.