7/4pi multiplied by 180/pi give you about 97 degrees when you calculate it.
I think the answer is the second one. A reflection over the x-axis and the a 90° counterclockwise rotation about the origin.
Given that 
, we have 
, so that
Take the derivative and find the critical points of 
:
Take the second derivative and evaluate it at the critical point:
Since 
is positive for all 
, the critical point is a minimum.
At the critical point, we get the minimum value 
.
Multiply both sides by 4
4xt/4> 4x7
Reduce the number 4
T>4x7
Multiply the 4x7
And the answer is t> 28
Answer:
its option B
Step-by-step explanation:
