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:

this is not the answer this is just a question. is this middle school math?

step-by-step explanation:

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3