book Maths Puzzle Numerical Ability

Hi,
Please solve the equation:

{{{3^x - 3(1 - 1/3^x) = 1}}}


I have tried multiplying out the bracket but still can't find the solution.
Please help.

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book Other Question

Please help, we are lost again, and specially on doing the graph. There is no book for this question, it is from the teacher. Thank you in advance for any and all help.

2) The v
7. Uniform Motion Example.

Two mountain bikers started from the ranger station in Rocky Mountain National Park
traveling in the same direction on Trail Ridge Road. The first bi