What does it mean to be a medium of exchange? A. The item is divisible and each unit is worth the same.
B. Any item that can be traded for another item.
C. It serves as a valid currency
D. Any item that maintains its worth over time.

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Ineed to know how to write question one in mathematical terms