Answer:
January 9 Betterment signs up 8 customers who pay a total of $800 cash.
Explanation:
Under the accrual basis accounting, revenues are recognized as follows:
Revenue is recognized when both of the following conditions are met:
a. Revenue is earned.
b. Revenue is realized or realizable.
Revenue is earned when products are delivered or services are provided.
Realized means cash is received.
Realizable means it is reasonable to expect that cash will be received in the future.