Courtney received an invoice for $4,000 that had payment terms of 5/10 n/30. He made a partial payment of $2,000 during the discount period.

a. Calculate the amount credited.

Round to the nearest cent

b. Calculate the balance on the invoice after the partial payment was made.

Round to the nearest cent

h(i,x)=

{10if program i halts on input x,otherwise.{1if program i halts on input x,0otherwise.