For each of the following independent transactions, indicate the change in total assets.
a. Purchased $750 of supplies on account.
b. Paid cash to employees for their salaries, $5,000.
c. Purchased furniture for $1,600 on account.
d. Received telephone bill for $200, to be paid in the following period.
e. Work performed; customer will pay $150 next month.
f. Earned $800 of revenue by performing a service for cash.
g. Performed $3,000 of services on account.