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http://i.imgur.com/9NLtL.png
the exercise is to use 'if' and 'vlookup' functions to return the tax rate based on the annual income and number of people in the household.
so far, i've tried inputting:
=IF(AND(B$2=3,C$2<=35000),VLOOKUP(C2,'Tax Index'!A3:E8,5))
but the third attribute in vlook...