Please show solutions and answers

Part 1

Which function has a negative average rate of change on the interval I Sx $4? d. /(x) - x - x- 1 C. h(x) - -x'+9 b. g(x) = 1.6x - 2 d. j(x) = -3Which points would you use to determine the average rate of change of the function g(x) = -x*+ 3x -4 on the interval -1 S x = 3? 1. (3, 4) and (-1, 0) 3. (3, 4) and (-1, -8) 2. (3, -4) and (-1, -8) 4. (-4. 3) and (=1, -1)An object is sent through the air. Its height is modelled by the function b(x) = -5x- + 3x + 65, where b(x) is the height of the object in metres and x is the time in seconds. Estimate the instantaneous rate of change in the object's height at 3 s