Answer:

Step-by-step explanation:
Given the expression 
According to the law of logarithm;
loga + log b = log(ab) and log a - log b = log(a/b)
The given expression becomes;

Answer:
50
Step-by-step explanation:
add 5 to -25 to get -2/5x by itself.
I would say it could be 35
Answer:
Each day she must stay at 10 or more.
Step-by-step explanation:
In the drawing, put from Monday to Sunday, choose a value between 10 and 15 for each day and represent it.
Using the Laws of Cosine, we obtain

, which c approximately equals 153.44. So Line AB ≈ 153.44 meters.