exam Maths Puzzle Numerical Ability

3-3/4x=4

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exam Other Question

Graph the inequality x<3
Is this how I am to answer this problem?
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-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 P(E)=0.30, P(F)=0.40,P(EnF)=0.1
P(EuF)=