Which function has a range of {y|y ≤ 5}?

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books