Answer:

Step-by-step explanation:
From the given question,
x 
Applying the required principle of indices to solve the question, we have;
x
=
x 
=
x 
= 
= 
Thus, the final answer is
.
Answer:
Step-by-step explanation:
The closest to sea level is - 11. The minus sign indicates that you are below 0 or the level of the sea at that location. So what is true and what isn't?
Grasshopper meadow is not closest to sea level. At 15 feet it is 4 feet more above the closest one at - 11. False
Echo point is the highest above sea level. It is 45 feet above sea level. This statement is also False.
Not really sure what the question is here, but I'm assuming you need to simplify the expression.
-3(5+2x)+(x-1)
-3(4+3x)
-12+-9x
Your answer is: -9x-12