nmen Natur-Gro, Inc., manufactures composters. Based on past experience, Natur-Gro has found that its total annual overhead costs can be represented by the following formula: Overhead cost- $264,000+$1.42x, where X equals number of composters. Last year, Natur-Gro produced 30,000 composters. Actual overhead costs for the year were as expected. Total overhead for per unit was Oa. $10.22 Ob. $11.63 . $8.80 Od. $1.42 Pr 033 PM 4/15/2019