The marginal cost C of manufacturing x golf clubs may be expressed by the quadratic function C(x) = 3.5x² - 310x + 23,000

How many clubs should be manufactured to minimize the marginal cost?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

If 20% of a number is 35, what is 50% of that number?

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points