Final answer:
The sales price variance for Roye Kennel for September is calculated by subtracting the actual revenue from the budgeted revenue at the actual level of activity, resulting in a $2,830 unfavorable variance.
Step-by-step explanation:
To calculate the sales price variance, we need to compare the actual revenue to what it would have been if the company had achieved its expected sales volume at the budgeted price. The budgeted revenue for 3,330 tenant-days at the budgeted price of $34.70 per tenant day would be 3,330 x $34.70 = $115,551. The actual revenue was only $112,721. Therefore, the sales price variance is $115,551 - $112,721 = $2,830 unfavorable, because the actual revenue is less than the budgeted revenue at the actual level of activity.