Cost for every hour of gaming = $6.67
Number of hours spent gaming = 1 hour per day for 10 days = 10 hours
Thus,
Total amount Denise spends=$6.67×10
To multiply a number by 10, we need to move the decimal place 1 point to the right.
⇒6.67×10=66.7
Thus, Denise spends a total of $66.7.