Solving exponential growth and decay problems

most cars decrease in value after you leave the dealer . however , some cars are now considered "classics" and actually increase in value . you have the choice of owning two cars: a 2006 mazda maita which is worth $ 19,000 but is depreciating 10% per year , or classic 1970 ford mustang which is worth $11,500 and is increasing in value by 6% each year . your tasks :

a. write an equation to represent the value of each car over time.

b. create table and draw a graph to represent the value of each car for ten years on the same set of axes

c. use your graph to determine approximately when the mazda and the ford have same value .