Carl and Don run separate chemical fertilizer manufacturing companies in the same industrial park. Both pollute the river flowing through the industrial park with waste from their manufacturing processes. In the table below, the first row shows the current level of waste that makes its way into the river from their respective operations. The table also sets out information that indicates how much it would cost each manufacturer to reduce its pollution by additional increments of 10 pounds. If each company is required to reduce debris by exactly 20 pounds, the total cost will be

Question

A. $7
B. $14
C. $21
D. $30

Answer 1

C. $21