Square root of 15 because you don't know what know is going to go after it, unlike the others where you can guess the numbers that goes after it
Answer:

Step-by-step explanation:
To evaluate
from the following expression:

Taking 


∴ 
Answer: 47
Step-by-step explanation:
simply substitute the constants with 5 and 3.
(5)^2 + 9(3) - 5 = 47
Answer:
No
Step-by-step explanation:
the mean is 16 (add 4+5+5+8, then divide answer by 4) and the mode is 5 (occurs most in data)