Answer: Bridget was thinking of the number 2.95
Step-by-step explanation:
21.9 / 2 = 10.95
10.95 - 8 = 2.95
Answer:
A) ![V =12500[1-\frac{17.2 \times t}{100} ]](https://tex.z-dn.net/?f=V%20%3D12500%5B1-%5Cfrac%7B17.2%20%5Ctimes%20t%7D%7B100%7D%20%5D)
B) ![V = 12500[1-\frac{19}{100} ]^{t}](https://tex.z-dn.net/?f=V%20%3D%2012500%5B1-%5Cfrac%7B19%7D%7B100%7D%20%5D%5E%7Bt%7D)
Step-by-step explanation:
In two years i.e. from 2013 to 2015 the car value decreases from $12500 to $8200.
a) If the rate of decrease is constant and it is r% per year, then
![8200 = 12500[1-\frac{r \times 2}{100}}]](https://tex.z-dn.net/?f=8200%20%3D%2012500%5B1-%5Cfrac%7Br%20%5Ctimes%202%7D%7B100%7D%7D%5D)
⇒ r = 17.2%
Therefore, the value of the car is given by
, where, t is in years since 2013. (Answer)
b) If the rate of decrease is exponential and it is r%, then
![8200 = 12500[1-\frac{r}{100} ]^{2}](https://tex.z-dn.net/?f=8200%20%3D%2012500%5B1-%5Cfrac%7Br%7D%7B100%7D%20%5D%5E%7B2%7D)
⇒ r = 19%
Therefore, the value of the car is given by
, where, t is in years since 2013. (Answer)
20% of $500 = 100$ so we take off 100.
And we take off $50 because it was out of the box and slightly scratched.
So result is $500 - $100 = $400
$400-$50 = $350
Answer = $350
Equation:
Let’s say
500=X
100=Y
50=Z
And answer = A
A=X-(Y-Z)
I hope this will be helpful