Pls help ignore my answers ;might be wrong but pls help

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

What are the excluded values? m+5/mn+3m