My thoughts:
Chips - 4 each
Cards - 3 each
Dealer Button - 2
First Line - Chip(4) + Chip(4) + Chip(4) = 12
Second Line - Two Rockets(6) + Two Rockets(6) + Chip(4) = 16
Third Line - Two Rockets(6) + Dealer Button(2) + Dealer Button(2) = 10
Fourth Line - Dealer Button(2) - Two Rockets(6) + One Rocket(3) x Chip(4) = 8
Lines 1-3 are simple add and subtract in order - left to right
Line 4 requires multiplication of 3x4 first, then subtract and add in order.
A couple of caveats:
- If the number of swirls on the chips has any significance, there is nothing in the first three lines to provide a clue to the five swirl chip in line 4, making the fifth swirl arbitrary. One more than a 4 swirl chip? Why not one less?
- If there is a difference between the Ace of Spades and Ace of Hearts, there is again, no hint in the first three lines to provide sufficient clues to assign different values to the two Rockets.
All that said - I am going with 8.
My under graduate degree included studies in logic and statistics, along with various mathematics courses. If I am wrong, it just shows that what I learned in my youth has gone missing in old age.