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Nashville's  residual income = Net profit - Imputed cost of capital

                                               = $3,600,000 - 12% x $9,500,000

                                               = $3,600,000 - $1,140,000

                                               = $2,460,000

Explanation:

Residual income is equal to net income minus imputed cost of capital. Imputed cost of capital is the product of interest rate and capital invested.