Answer all questions in the spaces provided. box

1 Circle the fraction that is equal to 1.25%

[1 mark]

8

1

25

1

80

1

125

1

2 Circle the expression that means the probability of A and not B.

[1 mark]

P(A' U B) P(A U B') P(A' ∩ B) P(A ∩ B')

3 Circle the triangular number.

[1 mark]

9 12 15 18

3

*03*

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IB/M/Jun22/8300/2H

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outside the

box 4 Circle the inequality represented by the diagram.

[1 mark]

–5 < x < 1 –5 < x ⩽ 1 –5 ⩽ x < 1 5 ⩽ x ⩽ 1

5 Solve 5(2x – 1) = 6x + 9

[3 marks]

x =

7

4

*04*

IB/M/Jun22/8300/2H

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outside the

box 6 Show that 2125 can be written as

 a cube number multiplied by a prime number between 10 and 20

[2 marks]

7 Sam types a constant number of words per minute.

He takes 8 minutes to type a report of 416 words.

How long does it take him to type an essay of 1534 words?

Give your answer in minutes and seconds.

[3 marks]

Answer minutes seconds

5

*05*

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IB/M/Jun22/8300/2H

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outside the

box 8 A school play takes place each day from Monday to Friday.

Here are the attendances on four of the days.

Monday Tuesday Wednesday Thursday

72 83 88 97

For all five days, the mean attendance is 90

Work out the attendance on Friday.

[3 marks]

Answer

Turn over for the next question

8

6

*06*

IB/M/Jun22/8300/2H

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outside the

box 9 Rosie makes phone calls to try to sell broadband.

Today, she made 120 calls.

The table shows the results.

Result of call Frequency

Not answered 33

Answered but sale not made 81

Answered and sale made 6

9 (a) Write down the relative frequency that a call was not answered.

[1 mark]

Answer

9 (b) During the rest of the week, Rosie will make 500 calls.

Using the results in the table, how many sales does she expect to make during the

rest of the week?

[2 marks]