I need clear answer

its multiple choice

Question 3 Find the derivative of the function Not yet answered f(x) = (x+1) -V2x+4 Marked out of and calculate it at point x = 0. 1.00 Flag question Select one: O a. 2,25 O b. 2,75 O c. 2,5 O d. 2Question 4 Find the maximum and minimum points of the function Not yet answered Marked out of f(x)-8x3+7x2+2x-3 1.00 Flag question Select one: O a. Xmax -1/9, *min-1/7 O b. Xmax--1/4, Xmin--1/3 O C. Xmax-1/7, Xmin=1/9 O d. Xmax -1/3, Xmin--1/4Question 5 Find the intervals of concavity of the function Not yet answered f(x)=x#-24x 2+5x+8 Marked out of 1.00 Select one: Flag question O a. (-00,-2) U(2, too) O b. (-2,2) O c. (-00,2) O d. (-4.4)