If it takes 20 minutes to run a batch of hundred pills how many minutes will it take to run a batch of 50

The answer is simple. Take the amount of time that it took for one hundred and divide it by two, because you want to find out how much time it takes to run out of 50. Calculate it out and you get 10 minutes!
Hope this helps! Brainliest is always welcome!

For the answer, you want to divide the minutes by two, since you're dividing the number of batches by 2. 
So your answer is 10

Key features: the functions can not be parallels, this means that their respective slopes can not be equal or multiple to the other

Step-by-step explanation:

Take for instance 2 linear functions,  and

If they intersect in some point in the space, say that is

Then (x1,y1)=(x3,y3), (x2.y2)= (x3,y3)

So, we can compare the two functions and get the following result;

It tells us that if M=m, we get an error, meaning that the functions are in fact parallels and there is no way that they meet in some point.

hope this helps!