# College Algebra

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Value of Computer Software

The value V, in dollars, of a shopkeeper's inventory is software program is given by V=-50t + 300, where t is the number of years since the shopkeeper first bought the program. SHOW YOUR WORK for a and c.

a) Find the value of the software after 0 years, 4 years, and 6 years.

b) Use graph paper to graph the equation and then use the graph to estimate the value of the software after 5 years.

c) After how many years is the value of the software \$150?

• College Algebra -

V = -50t + 300.

a. V = -50*0 + 300 = \$300.

V = -50*4 + 300 = \$100.

V =

b. The following points maybe used for graphing:

(t,V) = (0,300), (2,200), (4,100),
(6,0).

c. -50t + 300 = 150 Solve for t.

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