a certain manufacturer produces items for which the production costs consist of annual fixed costs totaling $ 130,000 and variables costs averaging $ 8 per item . if the manufacturer ’ s selling price per item is $ 12 , how many items the manufacturer produce and sell to earn an annual profit of $ 140,000 ?
"let the items manufactured or sold bex 130000 + 8 x = 12 x - 140000 4 x = 270000 x = 67500 ans : e"
divide(multiply(divide(divide(multiply(add(add(const_3, 8), 12), power(const_100, const_2)), subtract(12, 8)), multiply(const_4, const_2)), const_3), const_1000)