Answer: -12
Step-by-step explanation:
Answer:
5x-13
The Answer is in the picture above please mark me brainliest. :)
One minute later at 8:01pm. One lighthouse will flash 3 times (at 20, 40 and 60 seconds)...the other will flash twice (at 30 and 60 seconds). So they will both flash 60 seconds later, at 8:01