Joseph bought a cell phone for 150. since he bought the phone its value has decreased steadily at $5 per month. the value in dollars, v(t), is a function of t, time in months. which best describes the domain and range of this function?

The answer to your question is:

Domain [0, 30]

Range [0, 150]    

Step-by-step explanation:

Data

Price = $150

decreased  $5/month

V(t) value in dollars

The function will be          V(t) = -5t + 150    When V(0), t = 30 months

The graph is below

Domain [0, 30]                 I got them from the graph

Range [0, 150]