The table represents the population, P(x), of a community x years from 2000. x 0 1 2 3 4 5
P(x) 15,000 15,224 15,316 15,387 15,447 15,500

What does the y-intercept represent?
A.
the population of the community in 2005

B.
the rate at which the population of the community is growing

C.
the population of the community in 2000

D.
the number of years it takes for the population to reach zero

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

For each proportion find the unknown number x 1/5/8=×/15