We know that the price of all the fabrics is the same. However, the length of the fabrics is different. We have to determine which fabric is the longest.
Option A: 
= 8.6
Option B: 
= 8.25
Option C: 
= 8.6667
Option D: 
= 7.33....
Hence, the longest fabric is the one given in option C, and its length is 8.6667
I think you solved it on your own because x is 82
The answer is a 2. Because x goes up by +2 and y goes up by x2
Arithmetic sequence
Given
where
a₁ = 16 and d = -3
We want to find the 10th term of the sequence, this means: we want to find a₁₀.
Since aₙ, for a₁₀ n = 10. Then we replace in the equation:
a₁ = 16, d = -3 and n = 10.
Answer: A. -11
