to find an equation parallel to 5x + y = 8, they must have the same slope. so you need to use the slope of 5x + y = 8 and the point (-4, 2) to find the parallel line.
use the point-slope formula: y= mx +c
m= -5; x= -4; y= 2
2 = -5(-4) + c
2= 20 +c
-18 = c
the new equation in slope intercept form is y = -5x -18
Since each table had 7 women and 3 men at each table, that would mean each table has 10 people. Since there are 9 tables he was waiting on, and 10 people at each table, multiply 9 x 10, and you will find that he served 90 people in total.
