please help

first fr 10 Hi 20 30 140 data next data next data next data next a Give two names for the location containing 20 b. Given the following node containing 25 r 125 how would you insert it between the nocles containing 20 and 30 in the above diagram. b r Given the following node containing 25 25 how would you insert it between the nocles containing 20 and 30 in the above diagram. write c++ code to do so C. write C++ code to delete the node containing 20 di write c++ code to delete the last node in the list