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The rate of change is 15. We know this because 30 - 15 = 15, 45 - 30 = 15, and 60 - 45 = 15.
The next item in the sequence would be 75, since 60 + 15 = 75.
Answer:
75
Explanation:
15,30,45,60,....
We are adding 15 each time
30-15 =15
45-30 =15
60-45= 15
The next term is 60+15 = 75