exam Maths Puzzle Numerical Ability

Evaluate f(-3). f(x)={-x^2+2x, x<1
{-2x+3, x>1

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exam Other Question

If I increase my usual driving speed by 10 km/h, I can drive the 255 km to Nashviille in 24 minutes less than usual. How fast do I usually drive? Use the Intermediate Value Theorem to determine if P(x)=2x^5-7x+1 has a zero in the interval [1,2].