B 1/4 because 12/3 equals 4 so she only gave 1 of the 4 she had so the answer would be 1/4
She would have had to buy 8 key chains for three dollars a piece.
Answer:
See below.
Step-by-step explanation:
1/(x + 1) consists of 1 factor, 1/(x + 1)
1/[a(x + 1)] consists of two factors, 1/a and 1/(x + 1)
The LCM is 1/[a(x + 1)]
The LCD is a(x + 1)
Step-by-step explanation: