Indicate how each of the following transactions affects the accounting equation.
a. Purchase of supplies on account.
b. Payment of wages.
c. Cash sale of goods for more than their cost.
d. Payment of monthly utility bills.
e. Purchase of a building with a down payment of cash plus a mortgage.
f. Cash investment by a stockholder.
g. Payment of a cash dividend.
h. Sale of goods on account for more than their cost.
i. Sale of land at less than its cost.