Answer:
it's C ;)) maybe i guess-
Step-by-step explanation:
Answer:

Step-by-step explanation:

X + 4/5 = 11
x = 11 - 4/5
x = 55/5 - 4/5
x = 51/5 or 10 1/5
or u can do it this way..
x + 4/5 = 11.....multiply everything by common denominator of 5
5x + 4 = 55
5x = 55 - 4
5x = 51
x = 51/5 or 10 1/5
The answer to this question is A $1.42 because the first customer paid $12 for 14 postcards