Can you explain step by step and gives an example in clear explanation. Thanks

Find the indicated function values for the function. If the function value is not a real number and does not exist, so state. x} 2 4x 4; 11211], }, Eat}, it; a} Select the correct choice below and, if necessary, ll in the answer box to complete your answer. Q 31- f{2[1}= El {Round to two decimal plaoes as needed} Ct B. The answer is not a real numb-er. Select the correct choice below and, if necessary, ll in the answer box to complete your answer. 0 A- g] = D {Round to two decimal places as needed.) C: B. The answer is not a real number. Select the correct choice below and, if necessary, ll in the answer box to complete your answer. 0' '91- fl?\" = D {Round to two decimal places as needed.) D B. The answer is not a real number. Select the correct choice below and, if necessary, ll in the answer box to complete your answer. C" A- f{ 6] = D [Round to two decimal places as needed.) 0 B. The answer is not a real number