There were 450 students enrolled in a middle school at the beginning of the school year. The number of students enrolled in the school at the end of the year was 10 percent less than the number of students enrolled in the school at the beginning of the year. How many students were enrolled in the school at the end of the year?

405

Step-by-step explanation:

10% of 450 is 45 and 450-45=405 students

405 maybe?

Step-by-step explanation:

10% of 450 is 45 and subtract that from 450?

it would be 6xy and -16xy.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40