Foundation Plus
21st September 1987
- 1Real Life and Distance Time Graphs3 marks
A coach travels 80 km in 1 hour, then 50 km in 1.5 hours. Work out the average speed for the whole journey, to 1 decimal place.
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 45°. How many sides does it have?
- 3Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Scatter Graphs3 marks
A line of best fit on a scatter graph has equation y = 2x + 24. Use it to estimate y when x = 7.
- 5Error Intervals2 marks
A number y is 67 when truncated to the nearest whole number. Write down the error interval for y.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1987, including the monthly compilation PDF.