Depreciation is the decrease or loss in value of an item due to age, wear, or market conditions. We usually consider depreciation on expensive items like cars. Businesses use depreciation as a loss when calculating their income and taxes.

Question

One company buys a new bulldozer for $140050. The company depreciates the bulldozer linearly over its useful life of 25 years. Its salvage value at the end of 25 years is $12550.
A) Express the value of the bulldozer, V, as a function of how many years old it is, t. Make sure to use function notation.
B) The value of the bulldozer after 16 years is $.

Answer 1

Since you claim that the depreciation is linear, (not realistic), let's express the
given data as ordered pairs in the form (years, value), that is,
(0,140050) and (25,12550)
slope = (12550-140050)/(25-0) = -5100
and since the point (0,140050) behaves like the y-intercept in y = mx + b

we have:
value = -5100t + 140050
so when t = 10 , value = .....

I will leave it up to you to state my solution in the way they want.