Ikerd Company applies manufacturing overhead to jobs on the basis of machine hours used. Overhead costs are estimated to total $348,425 for the year, and machine usage is estimated at 126,700 hours. For the year, $371,650 of overhead costs are incurred and 131,800 hours are used. a. Compute the manufacturing overhead rate for the year. Show work. b. Prepare the adjusting entry to assign the under- or overapplied overhead for the year to cost of goods sold. Show work.