posted by Jessica

Assume it costs Microsoft \$4,700 to manufacture 7 Xbox 360s and \$8,690 to manufacture 14. Obtain the corresponding linear cost function.

1. Steve

if x is the number of Xboxes,

x increases by 7, cost increases by 3990

so, the slope is 3990/7 = 570

cost = 570x + 710

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