Final answer:
The sum of 125 * 10, 1327, 10, and 138xy is 13937xy.
Step-by-step explanation:
The sum of 125 * 10, 1327, 10, and 138xy is:
125 * 10 + 1327 + 10 + 138xy
1250 + 1327 + 10 + 138xy
2577 + 10 + 138xy
2587 + 138xy
The sum is therefore 2587 + 138xy, which is option d) 13937xy.