book Maths Puzzle Numerical Ability

You tell Congress that the space ship they ask for would have a raius that's ?? times bigger than what you suggested and the voume (and weight and cost) would be ?? as large. After

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Please help I have tried this problem over and over.
22x + 2(3x+5)=66 where do you start first?
please help! i need to translate "the product of m and the sum of twelve and m" into a mathematical expression. thanks!