For a certain company, the cost for producing x items is 40x+300 and the revenue for selling x items is 80x - 0.5x^2. Find the two values of x that will create profit of $300.

Jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {