I’m confused on how this would work
what would the increasing order be?

c<a<b

Step-by-step explanation:

the angle opposite to a side greater than the other is the greater than the corresponding angles.

therefore, angle c is the least, since 16 is the lowest in the lengths. then comes a. and finally b, which is opposite to the longest side.

because 1.2 isnt half of 6 duh

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.