We can calculate the percent change dividing the change by the original amount of people attending the exhibit.
The increase is 298-152 = 146.
Then, we can calculate the percent change as:

There was a 96% increase in the number of people attending the exhibit.
You can "add" like you say or you could just call it subtracting. If you subtract 5 from 5 you still get zero. Then on the right side, you would do the same. You would subtract 5 from 12 getting x, which is 7.
If you added you would still get the same answers but it is easier to say just subtract. Anything you do to the left, do to the right.
Hope this helps :)
4/52 because 4 of each number and 52 total.
Answer:
1332
Step-by-step explanation:
'product' in mathematical terms is just another way of saying multiply
so ;
111 x 12 = 1332
Total amount of money: 175
Owen's amount: x
Ethan's amount: x + 33
(x) + (x + 33) = 175
2x + 33 = 175
2x = 142
x = 71
Owen's amount: $71
Ethan's amount: $104
Hope this helps!! :)