Using a system of equations, the correct statement is given as follows:
B. The equation that represents this situation is 10 + x = -18. The second number is -28.
What is a system of equations?
A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
The numbers are x and y, and their sum is -18, hence:
x + y = -18.
The number y is 10, hence:
x + 10 = -18.
x = -18 - 10 = -28.
Which means that option B is correct.
More can be learned about a system of equations at https://brainly.com/question/24342899
#SPJ1