Please help me with this​

The given equations are :

Let's solve for g in equation (2) :

now, let's plug value of g from equation (3) into equation (1) :

plugging value of b in equation (3) :

since " g " represents ground seats, number of ground seats :

=》396

And " b " represents balcony seat, therefore it is equal to :

=》312

the f

last graph i believe

step-by-step explanation:

worked it out i believe

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80