Question

How do I solve this? What is C?

Answer 1

c is the unknown variable we are trying to solve for in this question.

We know that when x= -1, y=3.

Let's plug in those two values in order to solve for c

3 = c - (-1)² - 2(-1)

Let's flip this so we have the unknown variable on the left side of the equation.

c - (-1)² - 2(-1) = 3

Simplify

c - 1 + 2 = 3

Simplify again

c + 1 = 3

Subtract 1 from both sides

c = 2

Your answer is D.

Have an awesome day! :)

Answer 2

Input the x and y values and solve for c using inverse operations.

3 = c - $-1^{2}$ - 2(-1)
Simplify.
3 = c - 1 + 2
Simplify.
3 = c + 1
Subtract 1 from both sides.
2 = c

c is 2, so option D is correct.