need all answered by any calculus experts please I'm stuck. please write LEGIBALLY

Using the function and the interval below complete parts a through c. f(x) =3x ; [- 128,128] a. Determine whether the Mean Value Theorem applies to the given function on the given interval [a,b]. Choose the correct answer below. O A. The Mean Value Theorem applies to the given function O B. The Mean Value Theorem does not apply to the given function. b. If the Mean Value Theorem applies, find or approximate the point(s) that are guaranteed to exist by the Mean Value Theorem. Select the correct choice below and, if necessary, fill in the answer box to complete your choice O A. x = (Type exponential notation with positive exponents, Use integers or fractions for any numbers in the expression.) O B. The assumptions for the Mean Value Theorem have not been satisfied. c. Make a sketch of the function and the line that passes through (a, f(a)) and (b,f(b)). Mark the points P (if they exist) at which the slope of the function equals the slope of the secant line. Then sketch the tangent line at P. OA. O B. O C. O O L