Higher

21 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.

A box plot has minimum 11, lower quartile 15, median 18, upper quartile 26 and maximum 31. Work out the interquartile range.

Write 32 in the form a b, where b is as small as possible.Write sqrt(32) in the form a sqrt(b), where b is as small as possible.

For the curve y = x² - x - 2, work out y when x = 1.For the curve y = x^2 - x - 2, work out y when x = 1.

y is directly proportional to x². When x = 2, y = 28. Work out y when x = 3.y is directly proportional to x^2. When x = 2, y = 28. Work out y when x = 3.