Answer
Money has a set value, and bartered goods do not.
Money is more portable than bartered goods.
Money allows people to easily store value they earn.
The answer is not any of the letters. I got x=15/2 or x=7.5. You may have made an error in your question.
Answer:
1) factor pairs- 1*328, 2*164, 4*82, 8*41
1,2,4,8,41,82,164,328
2) 2^3, 41
not a prime number
The answer is 50 y squared minus 4 x squared
