# 2.1 Maths quiz

## Question 1

The price of a cup of coffee increases from £2.00 to £2.30.

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## Question 2

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## Question 3

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a.

1 significant figure

b.

2 significant figures

c.

3 significant figures

d.

the number of significant figures doesnt matter.

b.

Each number is quoted to two significant figures so the answer should also be quoted to two significant figures.

## Question 5

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## Question 6

Re-arrange the following equation so that B is the subject. A = BC

A = BC

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To rearrange A = BC to make B the subject, both sides of the equation are divided by C. This cancels out the C on the right hand side leaving just B and on the left hand side.

## Question 7

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## Question 8

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a.

J s

b.

c.

## Question 10

Look at the following table of data and identify the dependent and independent variables.

Table 1   A sample table of data (for use with Question 10).
Month Sales (1000s) Advertising Pounds (1000s)
January 100 5.5
February 110 5.8
March 112 6
April 115 5.9
May 117 6.2
June 116 6.3
July 118 6.5
August 120 6.6
September 121 6.4
October 120 6.5
November 117 6.7
December 123 6.8

Using the following two lists, match each numbered item with the correct letter.

1. Sales

• a.Independent variable

• b.Dependent variable

• 1 = b
• 2 = a

‘Salesâ€™ is the dependent variable as it is being used to measure the effect of the independent variable, the advertising spend.

‘Advertising Poundsâ€™ is the independent variable as it is the variable that is being investigated.

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a.

between 1975-1980

b.

between 1985-1990

c.

between 1995-2000

d.

between 2005-2010