Solve the problem.Regrind, Inc. regrinds used typewriter platens. The variable cost per platen is $1.90. The total cost to regrind 90 platens is $500. Find the linear cost function to regrind platens. If reground platens sell for $9.60 each, how many must be reground and sold to break even?
A. C(x) = 1.90x + 329; 29 platens
B. C(x) = 1.90x + 329; 43 platens
C. C(x) = 1.90x + 500; 65 platens
D. C(x) = 1.90x + 500; 44 platens
Answer: B
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Provide an appropriate response.
This figure shows a circular sheet of metal with diameter of 20 inches, containing 12 equally spaced holes. Determine the distance between the center of the holes. 
A. 1.941 in. B. 7.244 in. C. 14.49 in. D. 3.882 in.
Solve the problem.On a new oak bookcase with a list price of $787, a series discount of 25/15/5 is offered to wholesalers while a series discount of 5/15 is offered to retailers.a) What is the wholesalers price?b) What is the retailer's price?
A. (a) $432.85; (b) $354.15 B. (a) $310.37; (b) $151.50 C. (a) $476.63; (b) $151.50 D. (a) $476.63; (b) $635.50