8. Which is the correct expression for the problem. Six to had 90 leaves of pad paper. He sold 68 leaves to his classmate. When he went home, his father bought four 90 leaves of pad paper. How many leaves of pad paper does Six to have? A. 90 - 68 + (4 x 90) = B. 90 - (4 x 90) - 68 = C. 90 + 68 - (4 x 90) D. 90 x 4 x 90 - 68 =


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