Barry is 7 years older than Meisha. Which equation shows Barry’s age (b) in terms of Meisha’s age (m)? If I don’t pass this test I will fail, so I really need help! I really really REALLY need YOUR help! 1. b=m+7
2. m=b+7
3. b=7m
4. m=7b

Anyone know? will mark brainliest if you're correct!

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The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.