Manson Industries incurs unit cost of $7 ( $4 variable and $3 fixed) in making an assembly part for its finished product. A supplier offers to make 10,900 of the assembly part at $5 per unit. If the offer is accepted, Manson will save all variable costs but no fixed costs. Prepare an analysis showing the total cost saving. if any. Manson will realize by buying the part. (Enter negutive amounts using either a negative sign preceding the number es. 45 or parentheses eg. (45).) The decision should be to the part