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Haze is a phenomenon that happens when small particles exist in large quantities in the
air. These could block the sunlight from reaching the Earth, hence impairing visibility.
Write a report in the form of an essay about the haze
phenomenon that includes the following. Scan the QR Code and
visit http://apims.doe.
• The causes of haze. gov.my/v2/ to help
• The effects of haze. you in preparing
• How does the Air Pollution Index (API) act as a guide the report.
to identify the quality of the air?
• The level of haze that occurred in your area and the
preventive measures taken following that incident.

In an amusement park, fixed revenue is generated from advertising sponsors whereas CHAPTER
7
fixed expenses incurred is the maintenance cost of the machines. Besides that, variable
revenue is the number of visitors who visit the amusement park whereas variable
expenses is the employees’ wages. An operations manager needs to estimate the
operating expenses and revenues to ensure that the amusement park obtains a profit.

The table below shows the daily expenses and revenues estimated by the operations
manager of an amusement park which offers 12 rides. Copy and complete the
information in the table below.

Daily expenses
Total variable operating cost per visitor RM30
Total fixed cost (RM10 000 + RM2 500 per ride)

Daily revenues
Admission ticket per visitor RM76
Food per visitor RM50
Souvenirs per visitor RM30
Parking per visitor RM5
Total variable revenues per visitor

Fixed revenue from sponsors RM8 000
Construct and solve the inequalities to determine the minimum number of visitors
needed to visit the amusement park per day in order to obtain a profit.
Interpret your solutions.

167
Linear Inequalities

07 TB Math F1.indd 167 11/10/16 12:16 PM