Answer:
Date Account Details Debit Credit
April 2 Cash $ 27,750
 Equipment $12,290
 Owner's Capital $40,670
Date Account Details Debit Credit
April 2 Entry not required till payment 
Date Account Details Debit Credit
April 3 Supplies $673
 Accounts Payable $673
Date Account Details Debit Credit
April 7 Rent expense $574
 Cash $574
Date Account Details Debit Credit
April 11 Accounts Receivables $1,188
 Service Revenue $1,188
Date Account Details Debit Credit
April 12 Cash $3,207
 Unearned revenue $3,207
Date Account Details Debit Credit
April 17 Cash $2,354
 Service Revenue $2,354
Date Account Details Debit Credit
April 21 Insurance expense $105
 Cash $105
Date Account Details Debit Credit
April 30 Salaries expense $1,220
 Cash $1,220
Date Account Details Debit Credit
April 30 Supplies expense $113
 Supplies $113
Date Account Details Debit Credit
April 30 Equipment $7,092
 Owner's Capital $7,092