A certain seed and fertilizer company compiled the following estimates for its operations. Capacity per period is sales of $$170,000.$

$($a$)$ the revenue function

$($b$)$ the cost function

$\backslash$table$[[$Sales$,$$$152,000,],[,$ Fixed cost,$$39,300,],[,$ Total variable cost,$63,840,],[,,],[$Total cost$,,103,140],[$Net income,,$$48,860$