7. Find the limit a. lim. x-2x+1 b. lim X-4 c. lim x2-16 4+x-2 x 4x d. lim; tan x 8. Discuss the continuity of f(x) = 3-9-x on the interval [-3,3]. Include a sketch of the function. 9. Find the x-values at which f is not continuous. Which of the discontinuities are removable? f(x)= = x x - x 10. Verify that the Intermediate Value Theorem applies to the indicated interval and find the value of c guaranteed by the theorem. f(x) = (x-6) +4, [4,7], f(c) = 3