exam Maths Puzzle Numerical Ability

Is this true or false?
The function f(x) = 3^x grows three times faster than function g(x) = x. Could you please explain this to me. Thanks!

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exam Other Question

Hi,
how do I represent the following on a Pie Chart:

Four Football teams each have the following Goal Difference;

Blue Team GD +14

Red Team GD +23

White Team GD -5 To Whomever can assist... Thank you!

A tank contains 50 gallons of a 40% solution of antifreeze. How much solution needs to be drained out and replaced with pure antifreeze to obtain a 50% solution?