Write 31/9 as a mixed number

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

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

How many solutions does the nonlinear system of equations graphed below have?