Answer:
Elegant Lawns
a. Analysis of transactions using the accounting equation:
1. May 15, Assets Cash $7,000 Equipment $3,000 Equity: Common stock $10,000
2. May 21, Assets: Office supplies $500 Liabilities: Accounts Payable $500
3. May 25, Assets: Cash $4,000 Equity: Service Revenue $4,000
4. May 30, Assets: Cash $1,000 Equity: Service Revenue $1,000
b. Journal Entries:
Date          Account Titles        Debit        Credit
1. May 15, Assets: Cash         $7,000 
Assets: Equipment                $3,000 
Equity: Common stock                             $10,000
2. 
May 21, Assets: Office supplies $500 
Liabilities: Accounts Payable                       $500
3. May 25, Assets: Cash       $4,000 
Equity: Service Revenue                          $4,000
4. May 30, Assets: Cash       $1,000 
Equity: Service Revenue                          $1,000
c. T-accounts:
Cash
Date          Account Titles        Debit        Credit
1. May 15   Common stock     $7,000
3. May 25, Service revenue    4,000 
4. May 30, Service revenue    1,000 
Equipment
Date          Account Titles        Debit        Credit
1. May 15   Common stock     $3,000
Office Supplies
Date          Account Titles        Debit        Credit
2. May 21, Accounts Payable $500
Common Stock
Date          Account Titles        Debit        Credit
1. May 15   Cash                                        $7,000
1. May 15   Equipment                                3,000
Accounts Payable
Date          Account Titles        Debit        Credit
2. May 21, Office supplies                         $500
Service Revenue
Date          Account Titles        Debit        Credit
3. May 25, Cash                                       $4,000 
4. May 30, Cash                                          1,000 
Explanation:
a) Data and Analysis with Accounting Equation:
1. May 15, Assets Cash $7,000 Equipment $3,000 Equity: Common stock $10,000
2. May 21, Assets: Office supplies $500 Liabilities: Accounts Payable $500
3. May 25, Assets: Cash $4,000 Equity: Service Revenue $4,000
4. May 30, Assets: Cash $1,000 Equity: Service Revenue $1,000