Answer:
C
Step-by-step explanation:
Given

The numerator is a difference of squares
x² - 16 = (x - 4)(x + 4)
=
← cancel the common factor (x + 4) on numerator/ denominator
=
→ C
===>Factors of −48 with smaller absolute value negative:
smaller factor larger factor difference
-1 48 49
-2 24 26
-3 16 19
Add: -3 + 16 = 13
Therefore, the answer to this item is letter c.13.
It is saying to find the perimeter, and to use 3.14 for pie when needed to do so.
The mean of 10 randomly selected students is definitely more likely to be closer to 75. 10 randomly selected students to include information and are more like to reflect the class’s scores. Consider an extreme example. Seventy-five students in a class of 100 earned perfect scores. The other 25 earned zeros. The average score of the class would be 75. A sample of 10 random students would almost certainly include more 100s then 0s, but both would be included in the sample. The mean of this samples score is closer to 75 than any individuals.
Your quotient is undefined if under the root you have a value <0
this means the value has to be >=0
so 15(x-1)>=0
(x-1)>=0
x>=1 which is option B