Please help me with these problems

5. [-/1 Points] DETAILS LARCALC11 1.3.059. Find the limit. (If an answer does not exist, enter DNE.) lim 7(x + Ax) - 7x AX -0 Ax3. [0\" Points] DETAILS PREVIOUSANSWERS LAREALCH 1.2.D31.MI. Consider the following. :2. :52 HI] = 32:, 243.1:{4 3. xii1 Sketch the graph of f. Idenr the 1values of c for which the following limit exists. Hm I [I] SIT-ill.- D The limit exists at all points on the graph except where c = 4. D The limit exists at all points on the graph except where c = 2 and c = 4. Q The limit exists at all points on the graph. ID The limit exists at all points on the graph except where c = 2. 1. [-/1 Points] DETAILS LARCALC11 1.1.005. MY N he Consider the following problem. A bicyclist is riding on a path modeled by the function f(x) = 0.05(10x - x2), where x and f(x) are measured in miles. Find the rate of change of elevation at x = 2. f(x) =0.05 (10 x - x) 1 X 2 3 4 5 6 7 8 Decide whether the problem can be solved using precalculus or whether calculus is required. O The problem can be solved using precalculus. O The problem requires calculus to be solved. If the problem can be solved using precalculus, solve it. If the problem seems to require calculus, use a graphical or numerical approach to estimate the solution. 2. [-/1 Points] DETAILS LARCALC11 1.2.017. MY N Create a table of values for the function and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. (Round your answers to four decimal places. If an answer does not exist, enter DNE.) lim sin 2x X-0 X X -0.1 -0.01 0.001 0.001 0.01 0. 1 (x) lim sin 2X X-0 X