It will take (100 -28.5)/14 ≈ 5.107 years to get to 100,000 miles. In that time the car will depreciate by a factor of 0.85^5.107, about 0.43605. The value at that time will be
.. $8200*0.43605 ≈ $3706
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The difference between 100k miles and 28.5k miles is 71.5k miles. It is "used up" at the rate of 14k miles per year, so the time it takes to do that is 71.5/14 ≈ 5.1 years.
Each year the car depreciates 15%. That is, its value is multiplied by 1 -15% = 0.85. In 5.1 years, the original value will be multiplied by 0.85^5.1. (Remember, exponentiation is repeated multiplication.)
Answer:
Word problem: A recipe for making cookies use half cup of sugar for 1 cup of flour to make one pound of cookies. How many cups of sugar you need to make 3 pound of cookies.
As you can see to solve that problem you need to multiply the fraction 1/2, which is the number of cups needed to make 1 pound of cookies, times the number of pounds that you want to make.
So, for this problem you have to multiply 1/2 times 3.
My estimate is that the result is 1.5.
You can verify my estimate by multiplying:
1 3x1 3
3 x ----- = ------ = ------ = 1.5
2. 1x2 2
So, I have shown that my estimate was correct.
K=4(5)
k=20
you just plug in 5 for d and multiply normally from there.
Answer:
I think its 153.94 inches squared