What type of change is individual change

How has apple been able to sustain its competitive advantage in the smartphone industry? a. by reducing its network effects b. by targeting its new products and services toward laggards c. by driving the price for the end user to zero d. by regularly introducing incremental improvements in its products

The following items could appear on a bank reconciliation: a. outstanding checks, $670. b. deposits in transit, $1,500. c. nsf check from customer, no. 548, for $175. d. bank collection of note receivable of $800, and interest of $80. e. interest earned on bank balance, $20. f. service charge, $10. g. the business credited cash for $200. the correct amount was $2,000. h. the bank incorrectly decreased the business's by $350 for a check written by another business. classify each item as (1) an addition to the book balance, (2) a subtraction from the book balance, (3) an addition to the bank balance, or (4) a subtraction from the bank balance.

Rahm's credit card issuer calculates interest based on the outstanding balance at the end of the last billing period. what is this method of calculating interest on a credit card called?