D
The larger the number the warmer it is
100cm is equivalent to 1m so 500cm is equivalent to 5m. What you need to do is divide 500cm (5metres) by 25cm (one quarter of a metre). So the number sentence using 'division' should look like 500cm divided by 25cm which equals 20. Don't forget to use proper symbols for division though. Let me know if this helps:)
Answer:

Step-by-step explanation:
Combine the opposite terms in r − 3 − r
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Answer:
90
Step-by-step explanation: