exam Maths Puzzle Numerical Ability

if a single roll of wallpaper will cover 3 square meters, how many single rolls will it take to cover a will 2 meters x 5 meters?

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exam Other Question

I need help answering this question. Will someone please help? Thank you

Describe what the graph of interval [-4,10] looks like.

Any help would be greatly appreciated.
16x2 + 40x + 25