Examine this tax schedule. Let x represent the taxable income and y represent the tax.
a. What is the calculator keystroke sequence for an equation that models the tax on the interval over 32,550 but not over 65,725?
b. What is the calculator keystroke sequence for an equation that models the tax on the interval over 100,150 but not over 178,850?

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Schedule Y-2- If your filing status is Married filing separately The tax is: If your taxable income is: of the amount over- But not Over- over $0 8,025 32,550 65.725 100.150 178,850 $8,025 32,550 65,725 100,150 178,850 1090 $802.50 + 15% 4,481.25 + 25% 12,775.00 + 28% 22,414.00 + 33% 48,385.00 + 35% $0 8,025 32,550 65,725 100,150 178,850