exam Maths Puzzle Numerical Ability

State the domain and range of -3f(x)

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exam Other Question

x-2/2-x+2/4=1/2
lcd=4 could you explain to me how to figure this out then check?
thank you! You and your pigeon start from home and drive north 30 miles then east 45 miles. Your pigeon decides to fly home. What is shortest distance he can fly?