Answer:
C(x) = 20x + 120
Explanation:
(a). If x=5 (you replace x with 5)
C(5) = 20(5) + 120
= 100+120=$220
Cost of producing five items is $220
(b). if x=16
C(16) = 20(16) + 120
= 320 + 120 = $440
Cost of producing sixteen items is $440
(c). C(35) = 820
This means that the cost of producing 35 items is $820
Hope this helps :-) xoxo