Question: Based on the result you got, the formula for the multiple linear regression is

$($please fill in the blank in the "BAN $440\_$ProblemSolving $1\_$YourLastName.docx" file$)$:

AmountCharged $=$ Income $($$$1000$s$)$

HouseholdSize$*$

$+$

$($Note: Please keep $3$ decimal places.$)$

Question: What is the predicted annual credit card charge for a four$-$person household

with an annual income of $$50,000?($please type in your answer on the blank line in the

"BAN $440\_$ProblemSolving $1\_$YourLastName.docx" file$)$

Note: Please keep $2$ decimal places.$)$

Question: What additional independent variables might be helpful to make better

predictions of the annual credit card charge? $($please type in your answer in the "BAN

${440}_{?}$ProblemSolving $1\_$YourLastName.docx" file$)$