Health Science Pathway
Module 8 Logarithms and Growth and Decay
Practice Task 2
1. Change the following from exponential to logarithm form
a) 25 = 32
Answer: log 2 (32) = 5
b) 54 = 625
Answer: log 5 (625) = 4
c) 102 = 100
Answer: log10 (100) = 2
2. Change the following from logarithmic to exponential form
a) log 7 49 = 2
Answer: 72 49
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b) log 5 (25) = -2
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Answer: 5−2 = 25
c) log10 10000 = 4
Answer: 104 = 10 000
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