Word Problem about Geometric series

Help! I’m studying for a quiz and I saw this question in my book.

A patient has an infection that, if it exceeds a certain level , will cause the patient’s death. He is given a drug that will inhibit the spread of the infection. The drug acts in such a way that the level only increases by 65% of the previous day’s level. On the first day, the level of infection is measured at 450. The critical level of infection is 1,280. Will the infection reach its critical level?

submitted by Nevin Manimala Nevin Manimala /u/androthemofo
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Does this prime number translate into binary of DVD copyright removal software?

Hello, I have just been reading about illegal prime numbers and I am not 100% sure I am understanding this correctly,

apparently https://en.wikipedia.org/wiki/Illegal_prime states that ” Its binary representation corresponds to a compressed version of the C source code of a computer program implementing the DeCSS decryption algorithm, which can be used by a computer to circumvent a DVD’s copy protection”

and this is by pure chance? it just happens to represent the binary of this source code in total? Not just one small part of it?

This seems like the chances of this is insanely tiny, how would I work out the probability of this happening? To me it seems almost impossible.

Other Links: http://fatphil.org/maths/illegal.html

edit: http://primes.utm.edu/glossary/page.php?sort=Illegal it seems the code existed, then someone worked out that it could be translated into a prime number through some various means. But it still seems very crazy that this can work at all.

submitted by Nevin Manimala Nevin Manimala /u/Togglee
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Turo – Toyota Tacoma – 2017

Hey guys. Tough times fell on me and I’m thinking about selling my truck. I just recently ran into Turo so I was thinking about potentially using Turo to rent out my car for some cash. Do you guys think it will make sense financially? My monthly payments are $550 a month.

Truck: Toyota Tacoma 2017, TRD Sport RWD.

I was thinking about potentially using Turo to rent out my car for some cash. Do you guys think it will make sense financially? My monthly payments are $550 a month.

-Daniel

Edit: You guys are awesome

submitted by Nevin Manimala Nevin Manimala /u/DanielHYoo
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