exam Maths Puzzle Numerical Ability

What is the minimum value of the missing number
3(?+6)> or equal to 3
What is the maximum value of the missing number
ll> or equal to -1(?-3)+8

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exam Other Question

This is from a text book
base 1 of a trapezoid =10 ft,base 2=8ft.The height is 5.What is the area?

Thank You alot for your help!!! Angles A and B are complementary.
Measure of angle A equals to 5x+8 and angle B equals to x-11. Find angle A and angle B