Answer:
Option A. 3(n-2)
Step-by-step explanation:
"2 less" - "subtract 2"
Then 3 of n - 3n
Hope helps -
Step-by-step explanation:
(x-9)²
= (x-9)(x-9)
= x²-9x-9x+81
= x²-18x+81
The amount of gold coating in millimeters needed for the ring is the difference between the total coating and the coating that has already been applied. From the given above, that would be,
0.03 mm - 0.021 mm = 0.009 mm
Thus, the answer to this question is letter B.
It’s going to be -2 because the y intercept is when x=0.
