Somebody please help me with math ;-;: what is the equation for this table?

X 2 4 5 8 12
Y 11 13 14 17 21

options:

1.y = x + 9
2.y = x - 9
3.y = x ÷ 9
4.y = 9 x

y=x+9

Step-by-step explanation:

2+9=11,4+9=13,5+9=14,9+8=17,12+9=21

m∠a is 90°

m∠b is 40°

(53.5 - 18.4) m.

step-by-step explanation:

after undergoing a displacement of 18.4m, the initial position was (53.5 - 18.4) m if an object has a final position of 53.5.