Since ​2004, the amount of money spent at restaurants in a certain country has decreased at a rate of ​8% each year. In ​2004, about ​$2420 billion was spent at restaurants. If the trend​ continues, about how much will be spent at restaurants in ​2017? Write an exponential equation and use your equation to determine your final answer. In order to earn full​ credit, you need to write the equation and show your work.

2 answers

after x years, the amount is
2420 * 0.92^x
2.480E9 * (1 - .08)^(2017 - 2004)