The controller of the ljiri Company wants you to estimate a cost function from the following two observations in a general ledger account called Maintenance: (Click to view the information.) Requirements 1. Estimate the cost function for maintenance. 2. Can the constant in the cost function be used as an estimate of fixed maintenance cost per month? Explain. 3. How might a manager use the cost function above? Requirement 1. Estimate the cost function for maintenance. (Enter amounts to the nearest cent.) Data table