Let x denote the amount of gravel sold (in tons) during a randomly selected week at a particular sales facility. Suppose that the density curve has height f(x) above the value x. Use the fact that the area of a triangle = 1/2(base) (height) to calculate each of the probabilities below: - ƒ (x) = { 2 (¹ − x) (a) P(x < 1/4) = (b) P(x≤ 1/4) = (c) P(x < 1/8) = 0 ≤ x ≤ 1 otherwise Density 2 L (d) P(1/8

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