Please can you explain how do I do the following:

1. logN1 = log(N0multiplied by2^n)

Makenthe subject?

All logarithms must be kept to the base 10.

Formula: Growth rate (k)

k = logN1 - logN0 / tlog2

2. A population of Escherichia coli, which increases from 2000 cells to 120 000 cells in 124 minutes during exponential phase. When incubated at 40 degrees.

2.1 Calc. the number of generations per hour? convert minutes to hours.

I am not particular sure how to use these formula, and calc. logs on the calculator.

3.1 Maketthe subject of the formula:

g = tlog2 / logN1 - logN0