Question 1174257
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The cost function is the fixed cost plus the per-gizmo cost:
C(x) = 1200+30x, where x is the number of gizmos produced.<br>
The cost of producing 60 gizmos is $1200+$30(60) = $3000. To break even when selling 60 gizmos, the selling price per gizmo must be $3000/60 = $50.  So the revenue function is
R(x) = 50x<br>
The profit is revenue minus cost:
P(x) = 50x - (1200+30x)
P(x) = 20x - 1200<br>