exam Maths Puzzle Numerical Ability

Given f(x)=-x3+x2+3x+4, find f(-1), f(0), and f(1)

The 3 and the 2 are powers of the x.

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exam Other Question

If a box of candy costs a retailer $2.50 and he wants to make a profit of 50% based on the selling price, what price should he charge for the candy? (x^7-x^5)(x^3-4)