Solve the Problem $V$ , in Dollars, of a Shopkeeper's Inventory Software Program Is

Multiple Choice

Solve the problem.
-The value $V$ , in dollars, of a shopkeeper's inventory software program is given by $V=-30 t+600$ , where $t$ is the number of years since the shopkeeper first bought the program. Graph the equation and then use the graph to estimate the value of the software after 9 years.

A) $\$ 320$

B) $\$ 600$

C) $\$ 330$

D) $\$ 340$