Which of the following shows a function written in equation notation that is equivalent to the function below?
f(x) = 3(x + 10)

A. y=3(x+10)
B. y = 3f(x) − 10
C. y = 3f(x) − 30
D. y = 3x + 10

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.