book Maths Puzzle Numerical Ability

Solve the following inequality--
2x + 8<= -16 + 8x
thanks in advance

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book Other Question

What is the inverse of the equation f(x) = -2x + 5? The annual salary of a lecturer at a local University has 9 years experience and is paid $25,749. A lecturer with 15 years experience is paid $41,210.
a. Use this info to constru