Question

Help with log question? Picture attached.

Answer 1

\[\log_{2}30\approx \log_{2}32=\log_{2} 2^{5} =5\times \log_{2}2=5 \]
\[\sqrt{5}\]\[\approx2\]

Answer 2

if you can use a calculator,
start by using change of base to solve log2(30)
then find the square root

finding an approximation is good only if you round once, rounding twice might end up killing your answer

Answer 3

2.215 is the correct answer. and without using calculator ,i have found 2

Answer 4

I ended up getting 4.907. Thanks for helping guys.

Answer 5

4.907 is the squared of 2.215