1.)how do i show A?

2.)how do i transpose the following equation to make h the subject,

if a hot air ballon is subjected to an air pressure at a altitude h of 70.129kPa

the atmostpheric pressure at sea level P0 is 101.325kPa

and coefficient k is -8152

find the height from the sea level, of the hot air balloon.

3.)Simplify: Log10(B3-(Log10(AB)-Log10(A/B))