7. Rona's personal tax rates are shown below. Her income last year was $325,000 and the first $18,000 earned was tax-exempt, A. How much income tax will Rona pay? B. Calculate the marginal tax rate. C. Calculate the average tax rate. Income Tax rate First $45,225 25.00% over $45,225 up to $47,630 27.00% over $47,630 up to $95,259 32.00% over $95,259 up to $129,214 38.00% over 129,214 up to $147,667 10.00% over $147,667 up to $210,371 43.00% over $210,371 47.00%