exam Maths Puzzle Numerical Ability

Thirty-two is 7 less than 3 times a number. Find the number.

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exam Other Question

How do you identify whether x^2+3y^2-2x+36y+100=0 is a circle, hyperbola, parabola, or an ellipse. The u.s population in 1990 was approxiamely 250 million, and the average growth rate for the past 30 years give a doubling time of 66 years. the above formula for the united states