Chapter 4 - An Introduction to Functions - Common Core Cumulative Standards Review - Selected Response - Page 290: 15

The product of these two integers is 56.

Let's name the first integer x and the next integer x+1. We know that x+(x+1)=-15, and thus x=-8. This means the first integer is -8, and the second integer is -8+1=-7. Thus, the product of these two integers is (-8)*(-7)=56