Question 721363
F(x)= -x^2 +6+7 simplifies to F(x)= -x^2 +13


And here's the graph of F(x)= -x^2 + 13


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -5, 15,0,-x^2+13)

)}}}