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The value V, in dollars, of a shopkeeper's inventory software program is given by V = -40t + 350, where t is the number of years since the shopkeeper first bought the program. Find the value of the software after 0 yr., 4 yr., and 6 yr.
All you have to do is replace t with each year given and then simplify.
In other words, let t = 0 and simplify.
Then, let t = 4 and simplify.
Then, let t = 6 and simplify.
I'll do the first one.
V = -40(0) + 350
V = 0 + 350
V = 350
So, after 0 years, the software has a value of $350.
Do you understand?
Now, do the same using 4 years and then 6 years.