Foundation Plus
26th September 1988
- 1Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = 28/x, work out y when x = -4, and write down the equation of its vertical asymptote.
- 2Repeated Percentage Change3 marks
A town's population is 21500 and grows by 8% each year. Work out the population after 3 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 134°. Work out the other, and give a reason.
- 4Probability Trees3 marks
A bag holds 6 red and 2 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 5Box Plots2 marks
A box plot has minimum 10, lower quartile 13, median 18, upper quartile 26 and maximum 30. Work out the interquartile range.
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