### Home > CCA2 > Chapter 9 > Lesson 9.1.3 > Problem 9-39

9-39.

What is the probability that *x*^{2} + 7*x* + *k* is factorable if 0 ≤ *k* ≤ 20 and *k* is an integer? Homework Help ✎

How many possible values are there for *k*? This is the denominator of the probability.

What numbers between 0 and 20 starting with 1 and going to 20 have two factors that add to 7? Note: 0 works because *x* would be a factor.