Answer:
c.) aₙ = 5 × 4ⁿ⁻¹
Explanation:
Geometric sequence: aₙ = a(r)ⁿ⁻¹
where 'a' resembles first term of a sequence, 'r' is the common difference.
Here sequence: 5, 20, 80, 320,...
First term (a) = 5
Common difference (d) = second term ÷ first term = 20 ÷ 5 = 4
Hence putting into equation: aₙ = 5(4)ⁿ⁻¹
If we divide the area we have to cover by the area of a piece, we will get the number of pieces needed:

Answer:
DWWDDWDWDAWDWDAWD
Step-by-step explanation:
WDWDAWDDAWD AWDDAWD
Answer:
6.5
Step-by-step explanation:
I believe the answer is 2.222222222