The correct answer is

°.
To solve for

, you can start by finding the measures of the triangle's interior angles. Knowing that a straight line measures

°, you can subtract the given values from

° to find the measures of the respective supplementary interior angles. That would give you

°

and

°

.
Now, knowing that the measure of all the interior angles of a triangle is also

°, you can add the two interior angles you know

and subtract those from

°. Doing so would give you the measure of the missing third angle, which is

°.
Finally, because angle

is the supplementary angle of the missing angle from the previous step, simply subtract that angle's measure from

° to find

°, which is

or

°.
Just plug stuff in
(0, 32)
(100, 212)
(-20, -4)
(10, 50)
Step-by-step explanation:
The answer is a option.
hope it helps
Start with

Add 2x to both sides:

Subtract 21 from both sides:

Divide both sides by 5. Since it is positive, we don't have to change the inequality sign:

So, the answer is 