exam Maths Puzzle Numerical Ability

what represents the inequality of -2y+4>20?

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exam Other Question

Simplify the following index 3 of 9x^7y^5 . index 3 of 6x^6y^10z^5
Thanking you I am having trouble with these types of problems can you help?

Solve for x. Collect xs on the LEFT side. The solution should be presented with x first, the correct inequality symbol, then the number.
3(4x – 5) < 9