Anumber should be rounded up if
a. it is the first digit
b. the number after it is between 0 and 4
c. the number after it is between 5 and 9
d. it is the last digit

The answer is C I just answered this question

 Option 'C' is correct.

Step-by-step explanation:

A number should be rounded up if  the number after it is between 5 and 9.

As we know the rules for "Estimation"

If there is a number after which it has between 5 and 9 , then it is rounded up to the next nearest integer.

For example :

1) 46.5

Then this number is rounded up as there is 5 in tenths place.

It becomes 47.

Hence, Option 'C' is correct.

y=x+9

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step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed