At zero direct labor hours in a flexible budget graph, the total budgeted cost line intersects the vertical axis at $30000. At 10000 direct labor hours, a horizontal line drawn from the total budgeted cost line intersects the vertical axis at $80000. Fixed and variable costs may be expressed as:

$50000 fixed plus $5 per direct labor hour variable.

$50000 fixed plus $3 per direct labor hour variable.

$30000 fixed plus $5 per direct labor hour variable.

$30000 fixed plus $8 per direct labor hour variable.