The marginal revenue of a product is sh 300 and we know that total revenue is zero when x is zero the marginal cost is sh 200 and we are given that when x is zero the total cost equals to ksh.120,000

The marginal revenue of a product is sh 300 and we know that total
revenue is zero when x is zero the marginal cost is sh 200 and we are
given that when x is zero the total cost equals to ksh.120,000