JOYs Corp's cost formula for its scuba diving operating cost is $2.900 per month plus $320 per scuba diving-day For the month of April, the company planned for activity of 15 scuba diving days, but the actual level of activity was 13 scuba diving-days

The JOYs Corp's actual scuba diving operating cost for the month was $7580.

JOYs Corp's spending variance for scuba diving operating cost in April would be closest to