Write an algebraic expression for the verbal description. The total cost of producing x units for which the fixed costs are $2500 and the cost per unit is $40

Trigonometry help asap

What is the multiple zero and multiplicity of f(x) = (x ? 3)(x ? 3)(x + 5)? multiple zero is 3; multiplicity is 2 multiple zero is 5; multiplicity is 1 multiple zero is ? 5; multiplicity is 1 multiple zero is ? 3; multiplicity is 2

How can you tell when x and y are not directly proportional?