book Maths Puzzle Numerical Ability

Need help with the following:

Solve the inequality |3x - 1| < 7 and write the answer in the set notation.

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book Other Question

Rearrange the following so that the letter becomes the subject

p = n(q-2)^2; q =

Can you please show your working out, and thank you in advance
Max Z = 5x1 + 6x2
subject to: 17x1 + 8x2 <= 136
3x1 + 4x2 <= 36
x1, x2 >= 0 and interger
What is the optimal soulition? Z =? Put the answer in the form xx with no additional nu