Hi, I need help inversing this function:
y = 2^(x+1) - 3
Thanks. But I need help with one more thing. I'm confused with the following problems:
You purchase a used car for $8,000. The value of the car decreases 20% each year. Approximatively how much is the car worth in five years?
Find the inverse of: f(x) =
Lastly; A license plate must have two letters, followed by 3 digits and followed by 2 letters. How many possible license plates are there if letters I and O are excluded and letters and number can be repeated.
Thanks.
$\displaystyle V(n) = 8000\times 0.8^n$
make $\displaystyle n=5$
Like shown in post #2. You need to swap x and y then solve for y.
$\displaystyle y=\sqrt{x-9}$
then
$\displaystyle x=\sqrt{y-9}$
$\displaystyle x^2=y-9$
$\displaystyle x^2+9=y$
$\displaystyle y=x^2+9$
There are 24 letters and 10 digits available. And they have the order LL DDD LL
What next?
Thank you guys. I'm doing a final packet - finals are coming up so I just need sample problems. Our book doesn't show ALL of the examples in this packet - I just forgot some. Ummm.
A number is selected from 1 to 50. What is the probability that chosen number is prime given that it is less than 31?
A group has 6 men and 7 women. How many ways can a committee of 2 men and women be formed?
A red die and a blue die are tossed. What is the probability that a red die will show a 6 and the blue die will show an even number?
Sorry I suck at probabilities \: