Which ordered pairs are solutions to the inequality –3x + y ≥ 7?

(–2, –3)
(–1, 8)
(0, 7)
(1, 9)
(3, 18)

Question

Which ordered pairs are solutions to the inequality –3x + y ≥ 7?

(–2, –3) 
        (–1, 8) 
        (0, 7) 
        (1, 9) 
        (3, 18)

anonymous · Answer

and this one 

Jude is placing boxes on a shelf that holds up to 80 lb. He has x small boxes that weigh 5 lb each and y large boxes that weigh 12 lb each. Jude needs at least 4 small boxes on the shelf.

Which inequalities model the situation?

Choose exactly three answers that are correct. 

        5x + 12y < 80 
        5x + 12y ≤ 80 
        x > 4 
        x ≥ 4 
        y > 0 
        y ≥ 0

anonymous · Answer

any idea

anonymous · Answer

@gorv

gorv · Answer

2nd 3rd and 5th  for Q 1

gorv · Answer

small box weigth=5*x=5x
weight of large box= 12*y=12y

gorv · Answer

total must be less than equal to 80
5x+12y<=80
and x>=4