Foundation Plus
15th March 1983
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 8x^2 - 6.
- 2Compound Interest and Depreciation3 marks
£1000 is invested at 4% compound interest per year. Work out the value after 3 years, to the nearest penny.
- 3SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has a hypotenuse of 17 cm and an angle of 62°. Work out the side opposite that angle, to 1 decimal place.
- 4Probability Trees3 marks
A bag holds 5 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 3 households own 1 car, 2 own 2 cars and 3 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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