Answer:
what? that doesnt make sense
In a function, you need to substitute your input value for x in order to get your output. For example, if you have the function f(x)=3x, and your input value is 3, you have to substitute in 3 for x. In this case, 3 x 3 is equal to 9, therefore, your output for 3 in this function is 9. Keep in mind that the output always changes between equations.
Assuming the sum of the opposite angle would be 180. We can easily calculate for x and ultimately solve for the angle of B. We do as follows
B + D = 180
3x-12 + x = 180
4x - 12 = 180
4x = 192
x = 48 degrees
Therefore angle B would have a measurement of 132 degrees. Hope this helps.
