Answer:
12098
13127
Explanation:
Net income = revenue -  total cost 
revenue = price x unit sold
total cost = variable cost + fixed cost 
variable cost = variable cost per unit x unit sold 
unit sold is unknown, so it would be represented with a 
$152,600 = $153a - ($93a + $573,300)
$152,600 = $153a - $93a - $573,300
Collect like terms and solve for a 
a = 12,098
b. Net income in 2017 = $61,700 + $152,600 = 214,300
 214,300 = $153a - $93a - $573,300
Collect like terms and solve for a 
a = 13127