exam Maths Puzzle Numerical Ability

i am lost, is it possible to foil this, (3+h)^3......the third power is throwing me off here, any help would be greatly appreciated

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exam Other Question

The perimeter of a rectanngle is 160ft. One fourth the length is the same as twice the width. Find the dimensions of the rectangle. Type Selling $ Variable cost Sales distribution
Flats $12 $6 $15,000
Dress $24 $6 $50,000
Evening $20 $