The table gives values of on the rectangle R with (a) Find an overestimate and an underestimate for the integral [ f(x₂) R f(x, y)dA z = f(x, y) 0≤x≤2 0 ≤ y ≤ 8. x 0 1 2 0 94 79 66 y 4 8 81 70 60 61 58 54 as accurately as possible. Use the average of the overestimate and the underestimate. Enter all decimal places of your estimate.

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