well, when we use the word "the function" we're referring to the dependent part, which depends on the independent, y,x wise, we're referring to the function "y" or f(x) if you wish.
so for an exponential function
is the function ever positive only? it can be
is it negative only? it can be
can it be both? sure thing, most of the time it's both
we can say a function f(x) is always positive when the independent values of "x" yield a positive value only, mind you that when we're talking about "the function" we're really referring to the resulting values in a set, so can the values of the output no matter what "x" we use be always positive? sure, can they also be negative only? sure, how about both? sure thing.
notice the template in the picture below, we can transform any exponential function like the one above 2ˣ with some vertical shift upwards, and is always positive, or -2ˣ with a vertical shift downwards and it's always negative, or we can stretch it about and have -2ˣ shifted upwards so sometimes is positive, and sometimes is negative.
above the x-axis is always positive, below is negative, but with transformations on the parent function it can be any of the three types.
When I did the math in my head the fraction I got was 20/100000. 20/100000 as a decimal form is 0.0002.
50%
You have half of 6 so the percentage would be half of 100
Answer:
Four hundredths
In standard form - 
Step-by-step explanation:
Given : The green darner is one of the largest dragonflies.
It weighs about four hundredths of an ounce.
To write : Four hundredths in standard form.
Solution :
Standard form is when we write a larger number in a smaller way.
For example : 
So, according to question
Largest dragonflies weighs about four hundredths of an ounce.
Four hundredths means 0.04
In standard form - 