Ariel and Eric started abusiness that manufactures cutting tools.They sell the tools for $$75$ each.Their monthly fixed costs are $$3,800$ for te building lease and utilities,and $$2700$ for salaries.The cost of suppplies for each tool is $$14.$

a$)$To break even,how many tools do they have to sell every month?

b$)$If the cost of supplies for each tool is reduced to $$11$ and they hire one more person for $$1800$ per month,calculate the minimum number of tools that they would have to ensure that they donot incur aloss.