What is the percent of decrease from 20 to 19?

5%

Step-by-step explanation:

If 20 = 100% , 1 = 5%

20 - 19 = 1

So the percent of decrease = 5%

I am not a professional, simply using prior knowledge!

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answer: c. positive form.

step-by-step explanation:

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

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