exam Maths Puzzle Numerical Ability

Can anyone give me a hand with this one? Thanks!

3^x-1 = 2

Give answer to four decimal places. Thanks again!

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exam Other Question

Do all table of values for absolute value functions and graphs have to have 0,0 in them? If not tell why. Thank you. The cost of winning a seat in the House in recent years has been approximately 805e^0.0625x thousand dollars, where x is the number of years since 2000. Estimate the cost of winning a House seat in the year 2010.