AirQual Test Corporation provides on$-$site air quality testing services. The company has provided the following cost formulas and actual results for the month of February:

Fixed Component per Month Variable Component per Job Actual Total for February

Revenue $ $280$ $ $36,450$

Technician wages $ $8,200$ $ $8,050$

Mobile lab operating expenses $ $5,000$ $ $31$ $ $9,180$

Office expenses $ $2,700$ $ $4$ $ $3,110$

Advertising expenses $ $1,570$ $ $1,640$

Insurance $ $2,900$ $ $2,900$

Miscellaneous expenses $ $930$ $ $1$ $ $375$

The company uses the number of jobs as its measure of activity. For example, mobile lab operating expenses should be $$5,000$ plus $$31$ per job, and the actual mobile lab operating expenses for February were $$9,180.$ The company expected to work $140$ jobs in February, but actually worked $150$ jobs.