12EMA

Financial Maths

100

This is the money you earn before tax is deducted. 

Gross pay

200

A 10% discount on a $50 item saves you this amount. 

$5

300

This type of interest is calculated only on the original amount invested. 

Simple interest

400

What is the total amount if $5000 is invested at 5%p.a. compound interest for 5 years.

$6381.41

500

Kirrily puts her savings into an account that earns 5.6% p.a. compounded annually. After 4 years, she has $42 021.50. Determine how much savings Kirrily had initially, correct to the nearest dollar.

$33888.30

Bivariate Graphs

100

The scatterplot below shows the relationship between the number of hours students study and their exam scores.

• Positive correlation

• As study hours increase, exam scores tend to increase.

• The relationship appears approximately linear.

200

What is the gradient and y-intercept of a line with the following equation: 

y=2.5x+45

m=2.3

c=45

300

The relationship between temperature (x) and ice cream sales (y) is modelled by

y=15x−120

where x is measured in °C.

Predict the ice cream sales when the temperature is 28°C.

y=15(28)−120 

y=300

Predicted sales = 300 units

400

A data set has a correlation coefficient of

r=−0.89r = -0.89r=−0.89

Describe the strength and direction of the relationship.

• Strong negative correlation.

• As one variable increases, the other tends to decrease.

• The data points would lie close to a downward-sloping line.

500

Determine the equation of the line of best fit that passes through the points (−2,5) and (1,11).

y=2x+9

Australia

100

Australia's capital city.

Canberra

200

The number of states in Australia

6

300

The year of Australian Federation

1901

400

This is Australia's highest mountain on the mainland

Mount Kosciuszko

500

What are the first words in the seconds verse of the national anthem?

Beneath our radiant Southern Cross

Random

100

The largest planet in the solar system. 

Jupiter

200

The chemical symbol for gold. 

Au

300

The only mammal capable of true flight. 

A bat

400

This element makes up most of the air in Earth's atmosphere

Nitrogen

500

The value of pi rounded to four decimal places is this.

3.1416

Pop Culture

100

This singer holds the record for the most Grammy Award wins in history

Beyoncé

200

This 2023 film became the highest-grossing movie ever directed solely by a woman.

Barbie

300

This South Korean series became Netflix's most-watched show shortly after its release in 2021

Squid Game

400

his actor played both Oppenheimer in Oppenheimer and Tommy Shelby in Peaky Blinders.

Cillian Murphy

500

How many films are there in the Mission: Impossible franchise as of 2025?

8