Can some one check my answers please? The answers are in my reply post at the bottom of this page THANKS I have a couple more log questions Im stuck on. They keep giving me log questions that they never showed me how to do.. very fustrating! I need to evaluate the following logarithms: 68 a). log22^log55 I dont even know where to begin.. I never done a log with an exponent log??? 69. log25=log2(x+32)-log2x Determine the derivative of: 70 c) y= 2x^3 e^4x e) y= square root(x^3 + e^-x +5) I know this one should probably go to. (x^3 + e^-x +5)^1/2... then, dy/dx= (x^3 + e^-x +5)^1/2 * 1/2(x^3 + e^-x +5)^-1/2 * (3x^2)now im confused??? does the e^-x have a derivative?? like -xe^-2?? i got no idea. CAN ANYONE HELP ME PLEASE.... THANKZ YA!