If one cant be given, then most likely 12. Using 3 as the integer, as they would be the second lowest number.. and multiplying it by 4, 12.
Average = Mean
To find the mean, add up the numbers and divide it by how many numbers there are.
So,

There are 5 numbers in total.

To do these types of division, ignore the decimal and add a 0 at the end.
So we can do:

And put back the decimal.
Hope this helps :)
Answer:
- A
Step-by-step explanation:
F(x)=4-2x+x^2
=4-1+1-x-x+x^2
=3+(1-x) - x(1-x)
= 3+(1-x) (1-x)
= 3 + (1 - x)^2
f(x) = (1 - x)^2 + 3
Are you saying that every chimpanzee is a mother? If so, then each chimpanzee would have a baby 7 times in 28 years, meaning there would be 49 chimpanzees.
If you mean just one, then only 7 babies in 28 years.