Please help me with the following question: The table below shows a partial computer output for a real estate data for 5

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Please help me with the following question:
The table below shows a partial computer output for a real
estate data for 50 residences that we wish to determine how house
size is influenced by family income, family size, and education of
the head of household. House size is measured in hundreds of square
feet, income is measured in thousands of dollars, and education is
measured in years.
SUMMARY OUTPUT
Regression Statistics
Multiple R
0.865
Adjusted R Square
0.726
Standard Error
5.195
Coeff.
St. Error
Intercept
-1.6335
5.8078
Family Income
0.4485
0.1137
Family Size
4.2615
0.8062
Education
-0.6517
0.4319