exam Maths Puzzle Numerical Ability

EVALUATE EACH EXPRESSION: 7P3

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exam Other Question

The profit on a watch is given by P = x^2 - 13x - 80, where x is the number of watches sold per day. How many watches were sold on a day when there was a $50 loss? The formula for calculating the amount of money returned for an initial deposit into a bank account or CD (certificate of deposit) is given by A=P(1+r/n)^nt

A is the amount of