If a is one factor of x what is the other factor

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

If the dimensions of a rectangular prism are 5 ft x 3.5 ft x 2 ſt, what is the surface area?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?