Foundation Plus
8th October 1979
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 9x^2 - 6.
- 2Repeated Percentage Change3 marks
A town's population is 3000 and grows by 6% each year. Work out the population after 5 years, to the nearest whole number.
- 3Angles in Parallel Lines2 marks
Two parallel lines are crossed by a straight line. One of a pair of alternate angles is 87°. Work out the other, and give a reason.
- 4Probability Trees3 marks
A bag holds 2 red and 4 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 5Averages from Frequency Tables3 marks
In a survey 8 households own 1 car, 5 own 2 cars and 3 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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