exam Maths Puzzle Numerical Ability

what is the value of x in this equation
2 raise to the -5 = (1 + 0.23x)raise to -3

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exam Other Question

I need to know the real and imaginary parts of the complex number.
(17+2i)i^47. All I know is that I need to work the problem out before knowing what each part is. Use the slope and y-intercept to solve equations. 2x+3y=6