Answer:
-3(4+2n) multiply -3 by 4 and 2n
-12-6n
The answer to the first question is 7
Second one is 200-400
ANSWER
5
EXPLANATION
We want to simplify:

when x=2.
We substitute x=2 into the absolute value expression to obtain:

The about value of 5 means what is the distance of 5 from zero on the real number line.

The least number of parts both numbers can be divided into is the least common denominator of the 2 fractions which is 12
a.
This question is a rather odd way to ask you to find the radius of a circle from its area.
A = π r²
40000 = π r²
r² = 40000/π
r = √(40000/π)
r ≈ 112.8379
Answer: 113 miles
b.
C = 2 π r
754 = 2 π r
r = 754/2π = 377/π
A = π r² = A = π (377/π)² = 377²/π
A ≈ 45241.0658
Answer: 45241 square miles