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lisov135 [29]
3 years ago
10

S(t) = -105t + 945 to determine the salvage value, S(t), in dollars, of a table saw t years after its purchase. How long will it

take the saw to depreciate completely? A. 11 years B. 8 years C. 7 years D. 9 years
Mathematics
2 answers:
anyanavicka [17]3 years ago
7 0

Answer:

D

Step-by-step explanation:

When something depreciates completely, it will have a total value of 0 dollars. Therefore, set the equation to zero and solve for <em>t</em> to find the years.

S(t)=-105t+945\\0=-105t+945\\-105t=-945\\t=9

Therefore, the table saw will completely depreciate after 9 years.

NISA [10]3 years ago
4 0

Answer:

\large \boxed{\sf \bold{D.} \ 9 \ years}

Step-by-step explanation:

S(t) = -105t + 945

For the value to depreciate completely, the amount has to be equal to 0 dollars.

Set <em>S(t)</em> to 0.

0 = -105t + 945

Solve for the time <em>t.</em>

Subtract 945 from both sides.

0 -945= -105t + 945-945

-945=-105t

Divide both sides by -105.

\displaystyle \frac{-945}{-105}=\frac{-105t}{-105}

9=t

It will take 9 years for the saw to depreciate completely.

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