What is the sum of the polynomials? (8x^2-9y^2-4x)+(x^2-3y^2-7x)

Step-by-step explanation:

The given equation is as follows.

Both the equations can be added with coefficients of same variables. Coefficients with different variables cannot be added together.

Therefore, place the same variables together as follows.

 =  

Adding the respective variables, we will get the following.

  =

Thus, we can conclude that sum of is .

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.