Answer: 2 log y - log 25
<u>Step-by-step explanation:</u>
Notes: Division expands to subtraction. Exponent expands to multiplication.

Answer:
80.93
Step-by-step explanation:
15.40×7=107.80
188.73-107.80=80.93
Answer:
1,123,200 seconds
Step-by-step explanation:
86400 seconds in a day
86400*13= 1,123,200 seconds
Answer:
7 months
Step-by-step explanation:
1. After 7 months, Xian and Kai will have the same amount of stamps.
2. Xian and Kai will both have 164 stamps.