You are choosing between two different window washing companies. The first charges $5 per window. the second charges a base fee of $40 plus $3 per window. How many windows would you need to have for the second company to be preferable?

Thus, for more than 20 windows, the second company would be preferable

Step-by-step explanation:

Function Models

The two different window washing companies offer their services at two different schemes:

Company 1 charges $5 per window. Being w the number of washed windows, the function that models its costs is:

C1 = 5w

Company 2 charges a base fee of $40 plus $3 per window. The model for the costs is:

C2 = 40 + 3w

The equilibrium point where both companies charge the same occurs when C1 = C2, thus:

5w = 40 + 3w

Subtracting 3w:

2w = 40

Dividing by 2:

w = 20

Thus, for more than 20 windows, the second company would be preferable

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.