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We need to start by working out the price Adam will pay for the entire year if he chooses the monthly option. We do this by multiplying £20 x 12 months = £240. Next we need to find the difference (increas...

This is an 8 mark question, so lets split the answer into three parts so that the examiner can clearly see the various components of this 3+3+2 answer.

In the first paragraph try and state at least...

The process of breathing is made up of two components:

• Inhalation
• Exhalation

Inhalation is the process of filling the lungs with air. As they fill they expand and so th...

When solving simultaneous equations there are several options, the two most common methods being substitution and elimination. For this example I shall use elimination. In order to do so, either x or y mu...

To explain this to a student, I would start by explaining the general formula for a quadratic equation, (ax^2 + bx + c = 0). Then I would show using an example, how the a,b and c can be substituted with n...