What is the quantity aspect of the interval between fx4 and a4?

Quarter note + quarter note + eighth note + sixteenth note + sixteenth note=

In 1907, the retrospective on the work of 19th century post-impressionist georges seurat influenced the development of cubism in a radical way through his painting titled, “sunday afternoon on the island of la grande jatte.” ? ?

If i were writing an essay about barrington irving, what would be a good hook sentence to start my introduction? write a hook sentence that will grab your reader's attention and get them to want to read more about barrington.