answer: Heidi spend on the hotel room is $976.90
explanation: Interest rate of her credit card = 18%
Heidi placed the hotel room charge = $689
Total interest paid by Heidi = $287.90
Total Charge of hotel room paid = 689 + 287.90 = $976.90
Heidi paid a minimum of $20 a month for 49 months = 49 × 20 = $980
4.3
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