Daily Practice - Higher

25 students study Spanish and 11 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.

A box plot has minimum 14, lower quartile 21, median 27, upper quartile 30 and maximum 34. Work out the interquartile range.

Write the recurring decimal 0.666... as a fraction in its simplest form.

For the curve y = x² - 8x + 1, work out y when x = -3.For the curve y = x^2 - 8x + 1, work out y when x = -3.

y is directly proportional to x². When x = 3, y = 81. Work out y when x = 7.y is directly proportional to x^2. When x = 3, y = 81. Work out y when x = 7.