Someone please help!

Step-by-step explanation:

The angle on the interior of the triangle with an exterior angle of 130 degrees is 60 degrees.

All the angle of the triangle added up should equal 180 degrees, so:

x = 180 - 60 - 113 = 7 degrees

so x is 7 degrees

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.