Suppose the cost C (x), to build a football stadium of x thousand square feet is approximated by C (x) = 7,250,000 / x + 60. How many square feet was the stadium if the cost of the stadium was $8,000?

Step-by-step explanation:

Suppose the cost C (x), to build a football stadium of x thousand square feet is approximated by C (x) = 7,250,000/x + 60. Given the function, we can substitute values for x to determine the cost of a particular size of stadium or we can substitute values for C (x) to determine the number of square feet.

if the cost of the stadium was $8,000, the, we would determine the size of the stadium, x by substituting x $8,000 for C (x). It becomes

8000 = 7250,000/x + 60

8000 - 60 = 7250000/x

7940 = 7250000/x

7940x = 7250000

x = 7250000 / 7940

x = 913 ft^2