Problem $6-7($Algo$)$

Johnson Industries received a contract to develop and produce four high$-$intensity long$-$distance receiver$/$transmitters for cellular telephones. The first took $2,400$ labor hours and $$42,000$ worth of purchased and manufactured parts; the second took $1,700$ labor hours and $$34,020$ in parts; the third took $1,440$ labor hours and $$30,450$ in parts; and the fourth took $1,173$ labor hours and $$26,880$ in parts.

Johnson was a$$ed to bid on a follow$-$on contract for another dozen receiver per transmitter units. $($Hint: There are two learning curves $-$one for labor and one for parts.$)$ Use Exhibit $6\mathrm{.}5.$

a$.$ Ignoring any forgetting factor effects, how many labor hours should Johnson estimate are needed for the additional $12$ units?

Note: Round your answer to the nearest whole number.

Answer is complete but not entirely correct.

Estimated labor

b$.$ How much should Johnson estimate the parts cost will be for the additional $12$ units?

Note: Round your answer to the nearest dollar amount.

Answer is complete but not entirely correct.

Estimated parts cost

$

$243$