Solve the problem.Regrind, Inc. regrinds used typewriter platens. The variable cost per platen is $1.50. The total cost to regrind 60 platens is $300. Find the linear cost function to regrind platens. If reground platens sell for $8.60 each, how many must be reground and sold to break even?
A. C(x) = 1.50x + 210; 30 platens
B. C(x) = 1.50x + 300; 30 platens
C. C(x) = 1.50x + 210; 21 platens
D. C(x) = 1.50x + 300; 43 platens
Answer: A
Mathematics
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