I keep getting it wrong 1.988 or 1/0.503

Linear Approximation: Problem 4 (1 point) Results for this submission [ Entered I Answer Preview Result Message Your answer isn't a number -4*x+4 -4m 4 + (it looks like a formula that returns a number) The answer above is NOT correct. Use linear approximation, i.e. the tangent line, to approximate $13 as follows: Let f(a;) = i and find the equation of the tangent line to f(:v) at a "nice" point near 0,503. Then use this to approximate 4* 0.503 ' 1.988 Preview My Answers Submit Answers Your score was recorded.Your score was not successfully sent to the LMS. You have attempted this problem 4 times. You received a score of 0% for this attempt. Your overall recorded score is 0%. You have 6 attempts remaining. Email Instructor