exam Maths Puzzle Numerical Ability

I need help on practice 3.4 multi-step worksheet? The question is 12+2.1w=1.3 I need the answer and the check

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exam Other Question

How long must a guywire be to run from the top of an 18-ft pole to a point on level ground 16 ft away from the base of the pole? solve the inequality. thanks!

-4x-6>18