Answer:

Step-by-step explanation:
This question is to simplify and take "common" of the expression given.
The expression to simplify is:

From the number, we can take "3" out
From x, we can take
out
From y, we can take
out
That means we take out: 
So, it leaves us with:

This is the simplified form: 
Answer:
30°
Step-by-step explanation:
k and 30° are vertical angles
Therefore, k = 30°
The first one is incorrect
Answer:
The sea lion dives 24 feet.
Step-by-step explanation:
A seal (S) dives 15 feet.
A sea lion (SL) dives 6 feet less than 2 times the seal's dive. That can be expressed as:
SL = 2S -6
Since we know S = 15, we can say:
SL = 2*(15) - 6
SL = 24 feet
The sea lion dives 24 feet.