Answer:
B. 5.22×10⁸
Step-by-step explanation:
17
71 - 17 = 54
1 + 7 = 8
17 is your answer
hope this helps
By estimating. 5x700 is 3500. i multiplied the first digits in the equation.
1 hour = 60 mins = 3600 sec
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6 sec = 1 flash
3600 sec = 3600 ÷ 6 = 600 flashes
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Answer: 600 flashes
4 stays the same but just add 5 and 3 and answer is B
