How did the development of irrigation systems improve living conditions?
a. it made people less dependent on trade.
b. it made people switch from hunting to herding.
c. it gave people a surplus of food.
d. it allowed people to move out of town onto farms.

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?