JAMB Mathematics 2007 Objective — Question 8
Question 8 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2007 Objective paper, with the correct answer and a full explanation.
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If log10 2 = x, express log10 12.5 in terms of x.
- A. 2+3x
- B. 2-3xCorrect
- C. 2(1+x)
- D. 2(1-x)
Explanation
log10 12.5 = log10(100/8) = log10 10^2 - log10 2^3 = 2 - 3x.
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