"Inflation" means that, over time, it costs more dollars to maintain the same buying power. The inflation rate is calculated as how much more (in %) it costs to maintain the same buying power over a period of time. Over a certain year, the inflation rate is 1.8%. How many dollars does it cost at the beginning of the year to maintain the same buying power as $1000 does at the end of the year?

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?

Using inductive reasoning, what is the next two numbers in this set? 1,-7,13,-19 i got the numbers 14,-26 is that right?

Select all of the following expressions that are equal to 2.5.