Ummmmmmmmmmmmmmmmmmmmmmmmmmmmm im sorry I don’t know but I’m guessing u add the first and add second and subtract the 11 the first and 31 second then u use that and subtract and see if it negative or positive and mark it on the dot
Answer:

Step-by-step explanation:
x
= 
7 x 1 = 7
8 x 2 = 16
Let me know if this helps!
Answer:
Can't see your picture on the thing
Step-by-step explanation:
<span>An engineer relies heavily on the use of perpendicular and parallel lines. they use these lines to draw concepts, plot graphs, and find solutions to problems that arise.</span>