exam Maths Puzzle Numerical Ability

15(e)3x = 25................(E)3x = 5/3


cos(3x) = 5(x)2 (x squared)

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exam Other Question

If the inequality is y<-4 will the line be solid or dashes?
Sorry I submitted this question wrong the last time. One little mistake makes all the difference.

3/x^2+4x+3 - 1/x^2-9

Sorry for the mistake! I appreciate your help!
ac