Part A: As we have learned when given a pair of equations, we must always find a Point of Intersection....or, in other words...the solution of the lines given to us. As we know there can be one solution, in this case we view the graph; see where they intersect, and realize that the solution to these lines (Point of Intersection) is at (4,4).
Thus, your answer.
Practice, practice & practice.
X+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5
A.
that is changge per year
you do change/years=11150000/10=1115000
the mean change ws 1115000 visitors per year
B. it can be negative if the change was massivly negative to offset the 10800000 visitor increase
