exam Maths Puzzle Numerical Ability

Talon reads 1,000 words in 5 minutes, and Samantha reads 650 words in 2 minutes. Who is the faster reader?

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exam Other Question

Would someone be able to help me on this problem?

Given f(x) = -2x - 4, find f(-3)

Thanks so much,
Ashley 1. solve -3/x + 9/9x= -1

2. simply [8/(x+5)]-[9/(x-5)]

3. simplify (x^2-9)/(27-x^3)

4. (x^2 + 10x + 16) divided by (x^2-64)