Can someone plz me with this question asap

What is the function of an economic system?

What does water came out from a rock mean in this poem and why is it compared to the radio waltz? time was away and somewhere else. the waiter did not come, the clock forgot them and the radio waltz came out like water from a rock: time was away and somewhere else.

Which example shows the correct way to cite a website on an mla works cited page?