What is the range of the function$$f(x) = \frac{1}{1-x}~?$$Express your answer in interval notation.

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.