21. randy owns a computer store. in 1990, he sold 150 monitors. in 2000, he sold 900
monitors. let x represent the number of years since 1990. write a linear equation, in
slope-intercept form, that represents this data.

Step-by-step explanation:

Let represent the number of monitors sold.

Given:

is the number of years since 1990.

So, for the year 1990, .

For the year 2000, 10 years passed. So, .

Now, monitors sold in 1990 are 150. So, at

Monitors sold in 2000 are 900. So, at

Thus, the two points are and .

The slope of a line with points and  is given as:

Slope,

For the points and , the slope is given as:

Slope,

Now, the y-intercept is the point where . So, the point has value as 0.

So, the y-intercept is 150.

Equation of a line in slope-intercept form is given as:

Where, is the slope and is the y intercept.

Here, and .

Therefore, the equation that represents the above data is given as:

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! )

idk this answer sorry cant on this one.

step-by-step explanation: