book Maths Puzzle Numerical Ability

Solve each inequality. State the solution set and describe the graph in words.
w^2+3w<18

Thanks a bunch

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book Other Question

Hello I don't know how to find the dimensions with the perimeter given and how to find the answer to the second problem as well can you help me please?

Here is the word problem The diameter of the planet Uranius is 10 times larger than mercuries. If the sum of both planets is 54,867 km.What is the diameter of each one.