The Elevations of three cities in the Netherlands are shown below. Which is true

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.

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

What is the value of f(x) = 2.2 for f(-2)?