Use the limit definition of the derivative to find the slope of the tangent line to the curve `f(x)=6 x^2 + 4 x + 4` at `x=2`
Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity