Johnson Industries received a contract to develop and produce four high$-$intensity long$-$distance receiver$/$transmitters for cellular telephones. The first took $2,600$ labor hours and $$44,000$ worth of purchased and manufactured parts; the second took $2,240$ labor hours and $$42,240$ in parts; the third took $2,060$ labor hours and $$40,980$ in parts; and the fourth took $1,882$ labor hours and $$39,710$ in parts.

Johnson was asked to bid on a follow$-$on contract for another dozen receiver per transmitter units. $($Hint There are two learning curve $-$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.

$\backslash$table$[[$Estimated labor,hours$]]$

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.

$\backslash$table$[[$Estimated parts cost,$$,$