A formula is a rule linking sets of physical variables in context.

Emergency response worker

Maths

$$t = 0.5b + 30$$ When $$b = 280$$, what will $$t$$ be?

$$t = 0.5b + 30$$ When $$b = 250$$, what will $$t$$ be?

$$t = 0.5b + 30$$ When $$b = 100$$, what will $$t$$ be?

$$t = 0.5b + 30$$ When $$t = 100$$, what will $$b$$ be?

$$t = 0.5b + 30$$ When $$t = 175$$, what will $$b$$ be?

$$t = 0.5b + 30$$ When $$t = 80$$, what will $$b$$ be?

A {{}} is a rule linking sets of physical variables in context.

If $$T = 20 \times 0.45m + 20$$ and $$m = 4$$, what does $$T$$ equal?

If $$T = 20 \times 0.45m + 20$$ and $$T = 83$$, what does $$m$$ equal?

A {{}} is a circular graph where sectors represent different groups proportionally.

When you call 999 you will be asked, 'Which service do you require?' You will be asked to choose from: