Solution:
Given:

The value of a car after t - years will depreciate.
Hence, the equation given represents the value after depreciation over t-years.
To get the rate, we compare the equation with the depreciation formula.

Hence,

Therefore, the value of this car is decreasing at a rate of 6%. The purchase price of the car was $16,300.
Your answer is A. Y=5- 1/3x
For this case we must find the unit cost (dollars per pound) of each site and then compare.
We take into account that:
1kg equals 2.205 pounds
So, we have:
Site 1:

Site 2:

So, the unit cost is:

Thus, the best deal is on site 2.
ANswer:
The best deal is on site 2.
120/4 is 30
You'll be able to put 4 nails thirty times.
You put them every 6 feet
So, you have 5 feet before running out.