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The x axis displays the wavelength ranging from 400 to 700, and the y axis displays spectral power ranging from 0 to 3. The graph displays the curves for three monochromatic LEDs in three primary colors. The blue colored curve is the bell shaped curve that passes from (400, 0), (450, 1), (500, 0), and (550, 0). The green colored curve is the bell shaped curve that passes from (400, 0), (500, 0.5), (510, 1.2), (600, 0), and (650, 0). The red colored curve is the bell shaped curve that passes from (600, 0.1), (650, 2.7), and (700, 0). All values are estimated.