Let's first determine how many forks Jason has. We know he has 8 spoons and there are twice as many forks as spoons.
- Calculate the number of forks: \[ \text{Number of forks} = 2 \times \text{Number of spoons} = 2 \times 8 = 16 \]
Next, we will find out how many knives he has. We know there are 34 knives for every fork.
- Calculate the number of knives: \[ \text{Number of knives} = 34 \times \text{Number of forks} = 34 \times 16 \]
Now let's do the multiplication: \[ 34 \times 16 = 544 \]
Therefore, Jason has 544 knives.