Final answer:
Yes, 268+37 is less than 346. To prove this, add 268 and 37, which equals 305, and compare it to 346. Since 305 is less than 346, the conjecture is true.
Step-by-step explanation:
Conjecture: Yes; Argument: Show that 268+37 is indeed less than 346.
Step 1: Add 268 and 37: 268 + 37 = 305
Step 2: Compare the sum (305) to 346.
Since 305 is less than 346, the conjecture is true.