What did senator Kennedy do after minimum wage bill S.837 failed ? why did the senator take this action

He chose to ignore the economic reality of required wage increases. He hoped to get a reaction out of the senate by this in a type of "I won't until you do" type of thing.

whose power in the senate is equal to the power of the speaker of the house?

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering