Write the expression the product of -13 and k

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.

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

What number is 7 units left of -15?