A store sells rope by the meter. The equation p=0.75L represents the price p(in dollars) of a piece of nylon rope that is L meters long. A. How much does the nylon cost per meter?

B. How long is a piece of nylon rope that costs $1.50. Meters long.

p=0.75L (General equation)

A. When L=1m

p=0.75×1

p=$0.75

B. When p=$1.50

Substituting p into the general equation;

1.50=0.75L

L=1.50/0.75

L=2m

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: