What is the answer to (−f+10)(3f−1) ?

What kinds of numbers have an odd number of factors?

How is this equation completed? i cannot find any examples in the book.

Carl is hanging pictures in his home. there is a space on a wall that has a width of 4 feet. carl has pictures with different widths. which picture width would fit in the space on the wall? a. 46 inches b. 60 inches c. 50 inches d. 54 inches