Which expressions are equivalent to 4d+6+2d
a) 2(3d+3)
b) 6(d+6)
c) (3d + 3) +(3d+3)
choose all answers that apply

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.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8