Foundation Plus

Grouped data has five classes of width 10, the first being 30 < x ≤ 40. The frequencies in order are 21, 11, 7, 16, 3. Write down the modal class.Grouped data has five classes of width 10, the first being 30 < x <= 40. The frequencies in order are 21, 11, 7, 16, 3. Write down the modal class.

Write 6⁴ x 6² as a single power of 6.Write 6^4 x 6^2 as a single power of 6.

The lines y = 3x - 5 and y = x - 1 are drawn. Write down the coordinates of the point where they cross.

A pack of 9 batteries costs £5.40. A pack of 27 costs £14.85. Which pack is better value?

A cone has base radius 3 cm and vertical height 15 cm. Work out its volume, leaving your answer in terms of π.A cone has base radius 3 cm and vertical height 15 cm. Work out its volume, leaving your answer in terms of pi.