Answer:
b) 4,000 + 5 x 1,000
Explanation:
The cost of 1000 items will be the total of
1). the set up cost
2). The per item cost multiplied by 1000 units
Therefore, the cost function will
=set up cost($4000 ) + cost of 1000 items( $5 x 1000)
=$4000 + $5 x 1000