SOLUTION: If the sum of two numbers is 30 and one of the nubers is x, write the product of the two numbers as a function of x. This is what I had: n+x=30 x=30-n

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Question 86960: If the sum of two numbers is 30 and one of the nubers is x, write the product of the two numbers as a function of x.
This is what I had: n+x=30
x=30-n
f(x)=(30-n)(n)
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
you're on the right track, but you want a function of x not n ... just swap the variables

n+x=30 ... n=30-x ... f(x)=xn ... f(x)=x(30-x)