9 Which of the following expressions has exactly two terms?
1.2 +4
II. 8y + 82
III. x2 + 4.C + 7
A I only
B Il only
Ill only
D) Both I and II

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.

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.