Letter C is correct.
When the function is even, (all powers are even) both ends will go in the same direction.
In this case since the leading coefficient is negative, both ends will go down.
Step-by-step explanation:
Perhaps you want to solve the equation for the value of x. If so then let us work it out:

An exterior angle of a triangle is equal to the sum of the two opposite interior angles. Example : Find the values of x and y in the following triangle. y + 92° = 180° (interior angle + adjacent exterior angle = 180°.)
Answer:
f(-1) = 121
Step-by-step explanation:
f(x) = (5-6x)^2 (First we will substitute x for -1)
f(-1) = (5-6(-1))^2 (Then we will combine like terms)
f(-1) = (11)^2 (Then we will square it)
f(-1) = 121 (You are done)