Easy question please help

Which of the following points is a solution to the system of equations shown? y - x = -1 x + y = -5

The seventh-grade students at charleston middle school are choosing one girl and one boy for student council. their choices for girls are michaela (m), candice (c), and raven (r), and for boys, neil (n), barney (b), and ted (t). the sample space for the combined selection is represented in the table. complete the table and the sentence beneath it.

What is the approximate mark up percentage rate before m equals $1740 marked up from p equals $19,422