Question 4426: If the sum of two numbers is 30 and one of the numbers is x, write the product of the two numbers as a function of x. Answer by Abbey(339) (Show Source):
You can put this solution on YOUR website! The sum of two numbers is 30:
x+y=30
subtract x from both sides to rewrite this as:
y=30-x
The product of two numbers:
xy
substitute the x value for y:
x(30-x)=