Foundation Plus
29th October 1984
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 9x^2 - 3.
- 2Repeated Percentage Change3 marks
A town's population is 8500 and grows by 8% each year. Work out the population after 4 years, to the nearest whole number.
- 3Area and Perimeter2 marks
A triangle has a base of 26 cm and a perpendicular height of 12 cm. Work out its area.
- 4Probability Trees3 marks
A bag holds 10 red and 2 blue counters. Two are taken without replacement. Work out the probability both are red.
- 5Averages from Frequency Tables3 marks
In a survey 2 households own 1 car, 9 own 2 cars and 5 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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