exam Maths Puzzle Numerical Ability

given the total revenue function R(x) = 1000x-x^2 and the total cost function C(x)=3000+20x, find the total profit function P(x) and the maximum profit.

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hi, i need help with this problem please.

a plumber makes $4.50 per hour more than his apprentice. During an 8 hour day their combined earnings total $372. How much does each make per hour??

Thank you, i aprrecicate it 1.Use the factor theorm to find a polynomial of degree 3 with zeros 1,2 and3.