Setting a Google ads campaing

On the instructional video for google ads set up, we are given like 4 pictures and a logo. It was clear to me on the set up, my question is does google charge for each picture ad or same price for set of 5 images ad.
For example you set it at 20 dollars a day for 30 days, making all does other 5 different titles and images are you still paying 20 dollars per day for 30 days like you set it up in the first place? I would greatly appreciate your response. Thanks.