esc Basic Rule of Differentiation Score: 0/47 0/27 answered Question 21 Let h(x)=4x27x+4 < > Determine the value(s) of x, if any, for which h has a horizontal tangent line. Oh has a horizontal tangent line at x = Oh has no horizontal tangent lines. Submit Question 80 F3 MacBook At #3 02 54 % 5 Q W E R T A S D F Z X C 96