Help pls also if you get the answers can you show me how you got it cause I don't know how to do it

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

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.