exam Maths Puzzle Numerical Ability

What is linear factoring and can you explain on how to do this problem:

*which of the following is a linear factor of 2x^2-x-6?

a. 2x-3
b. x+2
c. 2x+3
d. x-3

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exam Other Question

Hi, I'm having trouble with inverse functions. Can you help me?

Find the inverse function of f.

f(x) = x-2/x+2 An inlet pipe can fill a tank in 6 minutes. A drain can empty the tank in 8 minutes. If the tank is empty and both the pipe and drain are open, how long will it take before the tank over flows?