Which of the following is equivalent to (f + g)(x)?
A) None of the above
B) f(x) - g(x)
C) f(x) + g(x)
D) f(x) / g(x)

Can someone check if i did this correct. it’s number 4 if you’re wondering.

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?