Mathematics
Grade10
Easy

Question

The cost (in dollars) to produce x surfboards in a factory is given by the function C(x) = 20x + 500. The number of surfboards that can be produced in h hours is given by the function x(h) = 30h. Find the rule for C(x(h)).

  1. 600h - 500
  2. 600h + 500
  3. 50h + 500
  4. 50h - 500

Hint:

Finding the value C(x(h)) where c(x)=20x+500 and x(h)=30h

The correct answer is: 600h + 500


    Given C(x) = 20x + 500 and x(h) = 30h
    C(x(h)) = C(30h) =20 × 30h + 500 = 600h + 500

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