Daily Practice - Higher

18 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.

A box plot has minimum 1, lower quartile 4, median 11, upper quartile 14 and maximum 17. 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 + 3x - 6, work out y when x = 1.For the curve y = x^2 + 3x - 6, work out y when x = 1.

y is directly proportional to x². When x = 2, y = 24. Work out y when x = 8.y is directly proportional to x^2. When x = 2, y = 24. Work out y when x = 8.