Answer:
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Step-by-step explanation:
Probability that first student prefers mechanical pen = 0.30
P(first student does not and second student does) = 0.70 * 0.3 = 0.21)
P( selecting 2 or fweer) = 0.30+ 0.21) = 0.51 or 51%
Hi :) the slope of line B is -5/8
please refer to the pic below for the solution! :)