Jeff Kings is a working at a law firm. His salary recently increased and he would like to keep track of his net worth. Jeff has gathered the following information to help you track his net worth. Assume opening net worth for July 31 is $500. July 31,2018 August 31,2018 September 30,2018 Cash $7,930 $13,430 $19,430 Automobile $13,000 $13,000 $13,000 Credit Card Bills $1,390 $1,190 $890 Automobile Loan $12,000 $11,500 $11,000 Salary $9,400 $9,800 $9,800 Food Expense $1,350 $2,530 $1,920 Entertainment Expense $170 $230 $240 Rent Expense $840 $840 $840 Do not enter dollar signs or commas in the input boxes. Use the negative