exam Maths Puzzle Numerical Ability

in 5 seconds and athlete runs 40 feet.How fast did he run?

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exam Other Question

I am trying to figure these problems. I have to factor the polynomials??




1. a=x^2+8x+15
2. a=x^2+8x+16
3. a=x^2+10x+16
4. a=x^2-9x

Please help me!!!
Divide: (6x3 - 5x2 - 13x + 13) ÷ (2x + 3)