Answer:
9
Step-by-step explanation:
you can always use guess-and-check:
124 seems rather high
(6)P(2) = 6!/4! = 6x5 ≠ 72
(9)P(2) = 9!/7! = 9x8 = 72
The number of viruses was 4000 times greater than number of protozoa.
Step-by-step explanation:
Given,
Number of protozoa = 
Number of viruses = 
Let,
x be the number of times number of viruses is greater than number of protozoa.
Number of viruses = Number of time * Number of protozoa

Dividing both sides by 

The number of viruses was 4000 times greater than number of protozoa.
Keywords: division, scientific notation
Learn more about division at:
#LearnwithBrainly
Answer:
$5.20 (Have a good day)
Step-by-step explanation:
Answer:
The distance is (2, 0)
Step-by-step explanation:
The first number is on the X axis. You move forward two places to get 7. The second number is on the Y axis, and you don't need to move anything so it stays the same. Hence the answer is a distance of two on the X axis.
I believe it is the second option.
Hope this helps :)