I think the answer is a.
6.9x - 16
Answer:
The volume is: 
Step-by-step explanation:
Given
---- height
-- length
--- width
Required
Determine the volume (V)
The volume of a triangular prism is:

So, we have:


1 lb of cranberries at $4 per lb = $4.00
4 lbs of almonds at $5.00 per lb = $20.00
so we have 5 lbs of trail mix for $24.00
24.00/5 = $4.80 per lb