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Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?