Foundation Plus

Grouped data has five classes of width 10, the first being 10 < x ≤ 20. The frequencies in order are 11, 16, 7, 3, 21. Write down the modal class.Grouped data has five classes of width 10, the first being 10 < x <= 20. The frequencies in order are 11, 16, 7, 3, 21. Write down the modal class.

Write 5¹⁰ / 5² as a single power of 5.Write 5^10 / 5^2 as a single power of 5.

The lines y = -x + 2 and y = + 2 are drawn. Write down the coordinates of the point where they cross.

A pack of 5 batteries costs £1.25. A pack of 15 costs £3.15. Which pack is better value?

A cone has base radius 3 cm and vertical height 9 cm. Work out its volume, leaving your answer in terms of π.A cone has base radius 3 cm and vertical height 9 cm. Work out its volume, leaving your answer in terms of pi.