PLZ HELP TIMED 20 POINTS! WILL MARK BRAINLIEST What is the equation of the graph below?

y = cosine (StartFraction x Over 0.4 EndFraction)
y = cos(5x)
y = cos(0.4x)
y = cosine (StartFraction x Over 5 EndFraction)

5n pls brainliest pls pls psl pls pls pls

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.