<span>Controlling is the managerial function that involves comparing actual results with objectives to enable mid-course corrections and provide a measure of success or failure.
</span><span>This function verifies whether everything occurs in confirmities with the instructions, adopted plans and principles.</span>
Answer:
<em>398 deaths were caused by Alzheimer.</em>
Explanation:
Proportionate mortality rate (PMR) gives the proportion of deaths in a given population over a period of time, this can be linked to various causes.
Mathematically PMR is reoresented below;
PMR = 
X 100
where 
= No. of death from a specific cause (In our case Alzheimier )
= Total No. of death at a given period
from the question the parameters were given except the number of death from Alzheimier
1.87 = 
multiply both side by 21,270 to isolate
= 1.87 x 21,270
Divide both side by 100 to obtain
= 
= 397.749
since dead people can not be divided
<em></em><em> </em>
Life expectancy is a generalization for a specific generation or peoples in a given era. People born between the late 90s to early 2000s have a greater live expectancy than say peoples 300 years ago. We are “expected” to live until about our late 70s, early 80s because we as a society have the means to keep us living longer. Someone who dies before that window, may have had some complications with their health that prevented them the estimated age.
Treating a city's water supply to remove any bacteria and impurities as clean and hygenic water supplies benefits the public/society.
They vary but l<span>ead, carbon monoxide, and sulfur dioxide are some of the most common ones that have decreased the most </span>
