Solve the problem
(x-12).(x+12)

x^2 - 24

Step-by-step explanation:

Multiplying two x's gives you x^2. A negative times a positive gives you a negative.

ŷ = 195.698X - 6169.941 ;

R² = 0.9224 ; About 92% variation in the value of Charitable contribution can be explained by the best fit line.

Step-by-step explanation:

The excel data:

AGI: (X) :

55

58

63

67

74

78

83

88

92

98

105

Charitable contribution Y:

4200

4800

6329

8017

7400

8600

12290

10406

11820

12090

14675

The scatter plot can b found in the picture attached below.

The estimated regression equation obtained is :

ŷ = 195.698X - 6169.941

Where ;

slope of the regression line = 195.698 ;

Intercept = - 6169.941

The R² value is called the Coefficient of determination which gives the proportion of variation due to the best fit line. Using the Coefficient determination calculator ; R² = 0.9224

About 92% variation in the value of Charitable contribution can be explained by the best fit line.