Can anyone me out i don't know how i got this wrong?

Which graph represents the solution set for the given system of inequalities? x+2y< 3 x+y> 4 3x-2y> 4

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

Perform the indicated operation. y^2 + 3y - 10 / 3y + 15