Applications of exponential function principal rate

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Reference no: EM13357339

Applications of exponential function: Principal, rate, time.

      A fax machine is purchased for $5,800.  Its value each year is about 80% of the value of the preceding year.  So after t years the value, in dollars,  of the fax machine, V(t), is given by the exponential function

V(t) = 5800 (0.8)t.

a. Give a sketch of the graph of the function V(t).  Your graph can be a "rough draft".

b. Determine the value of the fax machine in years 0, 1 and 4. to the nearest tenth.

c. Assume that the company decides to replace the machine when the machines values reduces to $500. In how many years will the machine be replaced.

Reference no: EM13357339

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