X = 3
20 characterssssssssssss
.20 is the correct answer because 100-99.80
-3x + 4y = 12
x - y = 1....x = y + 1
-3(y + 1) + 4y = 12
-3y - 3 + 4y = 12
-3y + 4y = 12 + 3
y = 15
x - y = 1
x - 15 = 1
x = 1 + 15
x = 16
one solution (16,15)
Step-by-step explanation:
a) 
b) 
c) 
Answer:
It affects about 14% of women.
It can last several weeks or months.
It may occur due to the change in hormone levels, genetics or stress.
It is generally caused by the birth of the mother's 1st child.
It is usually treatable with counselling and medication.
