What is 12x word phrase

1.       Give the word phrase of 12x
=> 12 is an integer
=> x in a variable or also called as unknown number
=> 12 = twelve
There the word phrase of this given number is
=> twelve times the number or twelve times x
 In giving the word phrase of a certain equation, simply give the word statement of each digits, variable and operations involve
Another example:
 => 5x + 1 – 2
=> five times the number added with one subtracted with two.

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !