\(\text{A carton company's costs are}\) \($3000\) \(\text{ per month plus }\) \($0.40\) \(\text{per carton.}\)

\(\text{The company sells the cartons for }\) \($1.80\) \(\text{ each.}\)

\(\text{How many cartons must the company sell to make a profit of }\)\($500?\)

\(\text{A bottle company's costs are }\) \($900\) \(\text{ plus }\) \($0.20\) \(\text{ for each bottle per month.}\)

\(\text{The company receives income of }\) \($2\) \(\text{per bottle.}\)

\(\text{How many bottles must the company sell each month to break even?}\)

\(\text{An industrial plant sells items whose costs are }\) \($500\) \(\text{ and }\) \($20\) \(\text{ per item.}\)

\(\text{If the plant sells 1200 items, how much must the plant charge to make a profit of }\) \($29500?\)

\(\text{A company manufactures office chairs.}\)

\(\text{In a month the costs are }\) \($2000\) \(\text{plus}\) \($25\) \(\text{per chair. }\)

\(\text{The company sells 300 chairs at }\) \($55\) \(\text{per chair in a month.}\)

\(\text{What is the profit?}\)