S3 math TSA

Please to solve the following questions:

1. In the following situations, are the values mentioned exact or estimated?
i) The capacity of High Island Reservoir is 273 000 000 m^3
ii) The capacity of High Island Reservoir is 20% more than that of Plover
Cove Reservoir.

2.Detemine whether each of the following data is discrete or continuous.
i) The number of reservoirs in Hong Kong
ii) The height of water level of Pok Fu Lam Reservoir


3.Which of the following polynomials has two like terms?
a. 3X - 3Y b. 3X - 5X
c. 5X + 3X^2 d. 7X + 7XY

4. The base fee of Helen's mobile phone plan is $20. It includes 500 minutes
free airtime. The fee thereafter is $0.1 per minute.
Helen useed her mobile phone for more than 500 minutes this month.
If she used the phone for x minutes. Which of the following equations can
be used to find Helen's mobile phone fees $C this month?

a. C= 20+(0.1)x
b. C=20+(0.1)x-500
c. C=20+(500-x)(0.1)
d. C=20+(x-500)(0.1)

5.Mary plans to study the consumer styles of housewives. The study is
conducted in the following four stages.
Arrange these stages. For example: (1)-->(2)-->(3)-->(4)

i) Analyse graphs and data for conclusion.
ii) Organise the data of consumer styles from questionnaires.
iii) Send questionnaires on consumer styles to housewives.
iv) According to various consumer styles, use suitable graphs to
represent data.

6. Ben deposited $4000 into a bank. The interst rate was 3% p.a., compounded
yearly. Find the amount that Ben would receive after 3 years. correct to
the nearest dollars.