Question

I need to create a linear scenario and problem. It must have at least two parts to my problem for my classmates to solve. And I have to know the answer to my own question! I'm totally lost! Please help!

Here’s an example below.

“A recent nursing graduate decides to travel the world! Before she goes, she decides to buy herself a Mac Book Pro for $3775.00. The Mac Book Pro will depreciate linearly over the next 2.5 years and will have a trade in value at Best Buy for $575.25. Explain the process to write a formula that expresses the Mac Book Pro’s value, V, in terms of its age, T, in years. What is the Mac Book’s value in 3 years? At what point is the formula useless?”

Answer 1

where

is the current value (0 years after depreciation)

is the value after 2.5 years of depreciation

So the required linear formula is

With this information we can say that in 3 years its value will be

(negative)

The formula becomes useless when the value becomes zero (completely depreciated asset)

Which happens for years

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