Answer:
(-1, 3)
Step-by-step explanation:
If you graph both lines, the point where they intersect is (-1,3)
The mean is found by dividing the sum of all terms by the number of terms present in the set.
Set up the equation:

The mean of this sequence is
5.
Answer:
m + 132
Step-by-step explanation:
A is 132 miles longer than B, whose length is m.
A = m + 132
3x-8+6x=7
9x-8=7
9x=15
x=9/15
x=3/5