WAEC - Mathematics (2016 - No. 32)

If log2(3x - 1) = 5, find x.
2.00
3.67
8.67
11

Explanation

Log2(3x - 1) = 5

Log2(3x - 1) = Log225

Log2(3x - 1) = Log232

3x - 1 = 32

3x = 32 + 1 = 33

x = \(\frac{33}{3}\)

= 11

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