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Calculate the total area of the region described. Do not count area beneath the x-axis as negative.Bounded by the line y = 6x, the x-axis, and the lines x = 4 and x = 5

  • brief calc -

    a = ∫[4,5] 6x dx = 27

    or, since the area is just a trapezoid of height 1,

    a = (24+30)/2 = 27

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