6 and 7 Please help with all questions if only one do 7 please

6. (4 points) Estimate (0.99)10 using a linear approximation. O 1.1 0 1 O 0.94 O 0.9 O 0.1 7. (6 points) Consider the graph of y = f(x) below. 2 v = /(.x) - -2 -1 2 3 4 GLUNL (a) At which of these points a is f(x) differentiable? Select all that apply. Oa=-2 0a=0 On=1 Oa=3 O None of these. (b) At which of these points a is f(x) continuous? Select all that apply. On= -2 0a=0 On=1 Oa=3 O None of these. (c) At which of these points a does lim f(x) exist as a finite number? Sel apply. On= -2 0a=0 On=1 0a=3 O None of these