Robert and John are married and have 4 dependent children and earn a gross biweekly salary of $5,002. They will also make the following tax-deductible purchases: Medical expenses: $6,861 Educational expenses: $7,448 When they file their taxes jointly, what will their tax refund be? Use the following information: Standard deduction for married couples: $25,900 Biweekly allowance: $165.38 per person