Question 33
LogarithmsIf log102 = x, express log1012.5 in terms of x.
- A.2(1 + x)
- B.2 + 3x
- C.2(1 − x)
- D.2 − 3x
Show the answer and explanation
Answer: D (2 − 3x)
Explanation
12.5 = 100/8, so log 12.5 = log 100 − 3 log 2 = 2 − 3x.
If log102 = x, express log1012.5 in terms of x.
Answer: D (2 − 3x)
12.5 = 100/8, so log 12.5 = log 100 − 3 log 2 = 2 − 3x.