i need help with this

3. FindS '(1) if f(x) = 3x +x+ 1. a. 3 C. b . 6 d. 4. Find f '(n) if f(x) = x -2x + 1. a. 37 - 2 C. T - 21 b. 37 - 7 d. 5. Findf (1) if f() - 3x- 2 C. b. 2 d. 6. Determine the equation of the tangent to the graph of y = (x - 3 at the point (-2, 1). a. y = -& -15 --& +8 b. y = &+ 15 d. J - -2x -3 7. Find the points on the curve y - 2 - - where the tangent line has a slope of a. 2, 2 and -2 2 c. (3 0) and (2 2 b. (1, 1) and 2, d -2, 2 and (1, 1) 8. Find the points on the curve y = (x - 1)| x - 4| where the tangent line is parallel to y = -4x. a. (-1, 6) and (4, 36) c. (3, 10) and (1, 0) b. (2, 0) and (-2, 0) 32 3' 27 and (0, 4)