Which type of payment has increased the most since 2000? How many billions of credit card transactions occurred in 2018?

Predict how many billions of non-prepaid card transactions will occur in 2020.

In 2004, the number of credit card and debit card transactions were quite similar. By 2018, they had very different usage. What do you think caused the variance in growth?

Check transactions have decreased every year since 2000. Hypothesize what the graph for check transactions will look like by the year 2030.