Answer:
 $2526
Explanation:
Kevin had copays of 5 × $30 for the office visits and $150 for the ER visit. His total copay was ...
 5×$30 +150 = $150 +150 = $300 . . . . amount Kevin paid
If his bills were $2826, his savings were 
 $2826 -300 = $2526
Kevin saved $2526 by being insured.