exam Maths Puzzle Numerical Ability

A company uses the formula C(x)= 0.02x^2-3.4x + 150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars is the unit cost at its minimum? What is the unit cost at that level of production?

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exam Other Question

Twice the area of a square is 72 square miles. What is the length of each side of square? indicate whether each statement is true Always, Sometimes, or never.
a. If a triangle is obtuse, it is isosceles.
b. The bisector of the vertex angle of a scalene triangle is p