You would basically go back and trace all your steps, that's what I do. And if your answer seems reasonable then you have the right answer but if your work doesn't match the answer than you've messed up.
I hope I helped if I did like my answer and comment down below thx
Option D:
is equivalent to the given expression.
Solution:
Given expression:
To find which expression is equivalent to the given expression.
Using exponent rule: 
Using exponent rule: 
Using exponent rule: 
Divide both numerator and denominator by the common factor 5.
Therefore, is equivalent to the given expression.
Hence Option D is the correct answer.
Step-by-step explanation:
x + x + x = 90°
3x = 90°
x = 90/3 = 30
x = 30°
now,
apply angle sum property to find the value of y
as, x = 30
so,
30 + 90 + y = 180
120 + y = 180
y = 180 - 120 = 60
y = 60° ans.
therefore, option B is correct
hope this answer helps you!
A is correct because the linear function is f(x) = x so it is a straight line through the origin with a slope of 1.
B is incorrect because it has a slope of 1 not 0
C is incorrect because it a straight diagonal line not a curvy one
D is incorrect because if you visualize the graph it goes through quadrant I and III not II and IV
