Two customers took out loans from a bank. ∙ Henry took out a 4-year loan for $5,000 and paid 4.2% annual simple interest. ∙ Ingrid took out a 6-year loan for $5,000 and paid 3.9% annual simple interest.
What is the difference between the amounts of interest Henry and Ingrid paid for their loans?

In two or more complete sentences describe how to determine the appropriate model for the set of data, (1,1), (3,2), (6,3), (11,4).

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?