20 POINTS Geometry Will Mark Brainliest.

m < 3 = 68°

Step-by-step explanation:

Given m<7 = 22°, apply the Alternate Interior Angles Theorem to solve for m<5 which is also 22°.

You can use the Vertical Angles Postulate to find the m<2 which is also 22°.

Given that m || n and y is perpendicular to m, making y also perpendicular to n.

Since x and y are parallel, x is also perpendicular to n.

This means m<2 + m<3 = 90°

22° + m<3 = 90°

m<3 = 68°

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363