Sparky company signs a contract to manufacture a new 3d printer for $80,000. the contract includes installation which costs $4,000 and a maintenance agreement over the life of the printer at a cost of $10,000. the printer cannot be operated without the installation. sparky as well as other companies could provide the installation and maintenance agreement. how many performance obligations are in this contract?

The following information is needed to reconcile the cash balance for gourmet catering services. * a deposit of $5,600 is in transit. * outstanding checks total $1,000. * the book balance is $6,400 at february 28, 2019. * the bookkeeper recorded a $1,800 check as $17,200 in payment of the current month's rent. * the bank balance at february 28, 2019 was $17,410. * a deposit of $400 was credited by the bank for $4,000. * a customer's check for $3,300 was returned for nonsufficient funds. * the bank service charge is $90. what was the adjusted book balance?