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Bess [88]
3 years ago
10

A company paid ​$140 comma 000140,000 for a new​ 18-wheeler. When it is 99 years old it will be worth ​$41 comma 00041,000. Usin

g​ straight-line depreciation, the value of the truck in​ dollars, V, is a linear function of its age in​ years, n. Find the function and the value when the truck is 88 years old.
Mathematics
1 answer:
Sloan [31]3 years ago
4 0

Answer:

V(n) =140000-10000n

The cost of truck when the truck is 8 years old is $60,000

Step-by-step explanation:

We are given the following in the question:

Cost of new truck = $140,000

Cost of truck when 9 years old = $41,000

The depreciation is given by the slope of line:

m =\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{41000-140000}{9-0} = -10000

Depreciation value = 10000

The value of truck is given by:

V = \text{Initial cost}-\text{Depretiation value}\times \text{Age of truck}

Putting values, we get:

V (n)= 140000 - 10000(n)\\V(n) =140000-10000n

Value of truck at 8 years old:

V(n) =140000-10000n\\V(8) =140000-10000(8) = 60000

Thus, the cost of truck when the truck is 8 years old is $60,000

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ioda
The answer is 8
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The exponents are subtracted one from another when divided.
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We can look at the problem this way:
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Since we have the power of -1 on the 3, we apply this rule:
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(6 \times  \frac{1}{3} )^{3}  = ( \frac{6}{3} )^{3}
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( \frac{a}{b}) ^{c}   =  \frac{ {a}^{c} }{ {b}^{c} }
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