The supply curve for portable charcoal grills shifts a) only when production technology changes. b) when a determinant of the supply of portable charcoal grills other than the price of portable charcoal grills changes. c) when any determinant of the supply of portable charcoal grills changes. d. only when the number of sellers of portable charcoal grills changes.

Salge inc. bases its manufacturing overhead budget on budgeted direct labor-hours. the variable overhead rate is $8.10 per direct labor-hour. the company's budgeted fixed manufacturing overhead is $74,730 per month, which includes depreciation of $20,670. all other fixed manufacturing overhead costs represent current cash flows. the direct labor budget indicates that 5,300 direct labor-hours will be required in september. the company recomputes its predetermined overhead rate every month. the predetermined overhead rate for september should be: