Find (g-f)(6) where f and g are the following functions:
f(x)= x+7 and g(x)=x^2+2x-5

What is best way to getting answer for my exam is

41/17 as a decimal rounded to the nearest hundredth

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)