exam Maths Puzzle Numerical Ability

Textbook Walls and Smith
The population of a country doubled in 100 years, what was the exponential growth rate?

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exam Other Question

For the angle for two vectors in the 3rd and 4th quadrant. To get the correct answer do you have to add 360. As you would add 180 if the vector was in the 2nd and 3rd quadrant. Usi how do you find rhe x and y intercepts of similar problems