This is urgent I need help!

All the 8th graders at Middle School will go on a field trip to the science museum. There are 9 classes of 25 students, 4 teachers, and twice as many chaperones as teachers. Each bus holds 45 people. What is the minimum number of buses needed for the field trip.

Be sure to answer each question completely. Each part is worth 2 points

1. Write an expression to show how to calculate the number of buses needed. Make sure to include parenthesis to show what should be done first since order of operations is important.

Example: (4 + 6) x (4 - 2) ÷ 2

2. How many buses will be needed?

3. Why must the answer to the problem be a whole number?

4. Why shouldn't you round the answer the usual way?

5. Can your answer be classified as a rational number? Explain why or why not.

1. Write an expression to show how to calculate the number of buses needed. Make sure to include parenthesis to show what should be done first since order of operations is important.

(9*25)+4+(2*4)=237 (total number of people going to the museum

Each bus,excluding the driver,holds 44 people

237/44 = 5.3863636363.......

2. How many buses will be needed?

6 buses are needed

3. Why must the answer to the problem be a whole number?

Buses cannot be divided in fractions It should be or 5 buse or 6

But 5 buses are not enough

4. Why shouldn't you round the answer the usual way?

Even when rounded it is still a decimal and buses need to be counted by whole number

5. Can your answer be classified as a rational number? Explain why or why not.

6 is a rational number (whole number)

5.38636363.......is rational ( repeating decimal