It would round to 5 because 4.999 is closer to 5 than a decimal (idk if that's 100%)
A system of equations is good for a problem like this.
Let x be the number of student tickets sold
Let y be the number of adult tickets sold
x + y = 200
2x + 3y = 490
x = 200 - y
2(200 - y) + 3y = 490
400 - 2y + 3y = 490
400 + y = 490
y = 90
The number of adult tickets sold was 90.
x + 90 = 200 --> x = 110
2x + 3(90) = 490 --> 2x + 270 = 490 --> 2x = 220 --> x = 110
The number student tickets sold was 110.
You asked what it is. It is a "one-step" linear equation in x.
The solution is found by multiplying both sides of the equation by -4. That gives you ...
... x = -100
Answer:

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- Since, 12² = 144 and 13² = 169, the square root of 150 is between 12 and 13.
- Then, you can pick any two whole numbers less than 13 and multiple them by 1/8.
- Remember that multiplying by 1/8 is the same that dividing by 8.
- Choose 12 and 11, for instance, and two rational numbers that are less than 1/8 of the actual side length are 12/8 and 11/8.
- 12/8 can be simplified to 3/2 and 11/8 is in its simplest form.
- Thus, two rational numbers that are within 1/8 of the actual side length of the bulletin board are 3/2 and 11/8.
Step-by-step explanation: