Your equation is r=28-p. The missing values are 14 and then 12. To find your equation, 28 should equal p and r, or 28=p+r as p is the value of the number of points she has scored already and r is the remainder she needs to score to tie her record. Now to find the value of r, subtract p from both sides of the equation, leaving you with r=28-p. To complete the table, simply place the values of p in for p. Your first equation will be 28-14=r meaning that r=14. Your next is 28-16=r which us r=12.