exam Maths Puzzle Numerical Ability

Find the values of each of the following polynominals for the given values of the variables

-x^2-5c-6, x= -3 and x = -2

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exam Other Question

The weight of 1m^3 of air is approximately 1.3 x 10^3 g. Suppose that the volume of air inside of a building is 3 x 10^6 m^3. How much does the air inside the building weigh? one number is 12 more then another, the sum of the smaller number and twice the larger number is 39 find the large number x= the first number and y= the second number so is it 12 + x = y or 2x +y = 32