Answer:
a.) 7600 dollars
b.) 2000
domain is 0 is less than or equal to t is less than or equal to 5
range is 2000 is less than or equal to V(t) is less than or equal to 18000
last question: it will take 2.5 years to get to 10000 value.
You can make the graph with the points I've given you
Explanation: