Southview Company incurred the following costs and machine hours during the first three months of the current year. Assume that the driver for all costs is machine hours. Required: Using the high-low method, construct a cost formula for electricity cost. If Southview had total costs in April of $53,000, how many machine hours did they incur during April? If Southview expects to incur 1, 500 machine hours in May what would be the estimate of their total costs?