Applying multiplication of functions, the total number of seats in the auditorium is given by:
h(x) = 80x² + 560x.
They are multiplied applying the distributive property, that is, all the terms are multiplied and then the common terms are added.
In this problem, the functions are given as follows:
Then the multiplication is:
h(x) = f(x)g(x) = 80x(x + 7) = 80x² + 560x.
More can be learned about multiplication of functions at https://brainly.com/question/13136492
#SPJ1