Foundation Plus
12th September 1961
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 8x^2 - 6.
- 2Compound Interest and Depreciation3 marks
£1100 is invested at 2% compound interest per year. Work out the value after 4 years, to the nearest penny.
- 3Transformations2 marks
The point (-4, 8) is rotated 90° anticlockwise about the origin. Write down the coordinates of the image.
- 4Probability (Higher)3 marks
A biased coin lands on heads with probability 0.2. It is thrown 250 times. How many heads would you expect?
- 5Averages from Frequency Tables3 marks
In a survey 2 households own 1 car, 7 own 2 cars and 9 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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