Foundation Plus

Does the point (2, 4) satisfy y > 2x - 1?

4 identical batteries cost £3.20. Work out the cost of 2 of the same batteries.

Two similar shapes have lengths in the ratio 1 : 3. The smaller has an area of 26 cm². Work out the area of the larger.Two similar shapes have lengths in the ratio 1 : 3. The smaller has an area of 26 cm^2. Work out the area of the larger.

A biased coin lands on heads with probability 0.15. It is thrown 500 times. How many heads would you expect?

Grouped data has five classes of width 10, the first being 0 < x ≤ 10. The frequencies in order are 11, 7, 16, 3, 21. Write down the modal class.Grouped data has five classes of width 10, the first being 0 < x <= 10. The frequencies in order are 11, 7, 16, 3, 21. Write down the modal class.