Multiple Choice
Solve.
-After being struck with a hammer, a gong vibrates 45 vibrations in the first second and in each secondthereafter makes as many vibrations as in the previous second. Find how many vibrations the gongmakes before it stops vibrating.
A) 270 vibrations
B) 54 vibrations
C) 280 vibrations
D) 49 vibrations
Correct Answer:

Verified
Correct Answer:
Verified
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