The correct expression of P in terms of m, r and N is;
[tex]P = \frac{[(1 + \frac{r}{1200})^{N} - 1] m}{{(\frac{r}{1200}) (1 + \frac{r}{1200})^{N} })}[/tex]
The formula is missing and it is;
[tex]m = \frac{(\frac{r}{1200}) (1 + \frac{r}{1200})^{N} P}{(1 + \frac{r}{1200})^{N} - 1}[/tex]
Now, we want to find P in terms of m, r and N. This means we are making P the subject of the formula.
When we cross multiply the given expression, we have;
[tex]m[(1 + \frac{r}{1200})^{N} - 1] = {(\frac{r}{1200}) (1 + \frac{r}{1200})^{N} * P}}[/tex]
This would be simplified to make P the subject as;
[tex]P = \frac{[(1 + \frac{r}{1200})^{N} - 1] m}{{(\frac{r}{1200}) (1 + \frac{r}{1200})^{N} })}[/tex]
Read more about Subject of Formula at; https://brainly.com/question/10643782
