5. Consider the function x) = 1M + 4 on the interval [1.6]. Give exact answers. DD NUT give decimal approximations. la] Find the slope of the secant line on this interval. lb) State the Mean Value Theorem from our textbook. to] If there exists a point c in the open interval (1, I5) such that {To} is equal to the slope you found above, give that point c. 5. Consider the function x) = [S + 5.1:}? Find the critical numbers of the function, and intervals where the function is increasing and decreasing bv using the methods we discussed in this class. a. Find the critical numbers [if any} of the above function. h. Find the intervalts} where the function is increasing (if anv}. c. Find the intervalls} where the function is decreasing {if anv]