Find the Average Rate of Change Illustrated in the Graph $C ( x ) = 1.30 x + 500 ; 46$

question 399

Multiple Choice

Find the average rate of change illustrated in the graph.
-Regrind, Inc. regrinds used typewriter platens. The variable cost to regrind each platen is $1.30. The total cost to regrind 110 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) \(C ( x ) = 1.30 x + 500 ; 46\) platens
• B) \(C ( x ) = 1.30 x + 357 ; 43\) platens
• C) \(C ( x ) = 1.30 x + 500\); 61 platens
• D) \(\mathrm { C } ( \mathrm { x } ) = 1.30 \mathrm { x } + 357 ; 33\) platens

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