If f(x)= x/2-2 and g(x)= 2x^2+x-3, find (f+g)(x).

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

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.