Answer:
9
Step-by-step explanation:
Find the factors of each number
18 - 1, 2, 3, 6, 9, 18
36 - 1, 2, 3, 4, 6, 9, 12, 18, 36
45 - 1, 5, 9, 45
The highest common factor is 9. So there is 9 boxes in a pack.
The y-intercept would be 2. This is due to the fact that when the line cross through the y axis, it is 2.
The percent increase is inside parenthesis
1.115 multiplied by 100
111.5% - 100% = 11.5% rate of increase