A manufacturer of rectangular tarpaulins uses the following combined to calculate the total area of different sizes of tarpaulins, where x varies according to the particular product line. h(x)=x^2+10x+21 What two functions could represent length and width for given values of x based on the combined function? f(x)=x+7 and g(x)=x+3 f(x)=x-7 and g(x)=x-1 f(x)=x^2+7 and g(x)=x^3+3 f(x)=x-7 and g(x)=x-3

To determine which two functions could represent the length and width for given values of x based on the combined function , we need to factorize the quadratic expression.The quadratic expression can be factored as . Therefore, the two functions that could represent the length and width are and .So, the correct answer is: and