i need help with questions 20-31 please!

mi wa Describe the end behavior of each function. W gle 20. y = x3 + 2x2+x- 1 21. y =8- x3-2x 22. f ( x) = x10 - x9 + 5x8 23. g(x) = (x - 3)2 - 1/ 1 24. y = 72 25. f(x) = _ 1 73 + 2 aphing Graph each function. Determine the interval(s) for which the function is culator increasing and the interval(s) for which the function is decreasing. 26. y = x3 + 3x2 - 9x 27. y = ->3 - 2x + 1 28. f(x) 1 Fx+1 - 4 29. g(x) _X+5 x - 2 30. y = 1x2 - 4/ 31. y = (2 x - 3)2 + 1 Up iswog s ting enisiaon lications 32. Physics The gravitational potential energy of an object is given by U(r) =- Problem where G is Newton's gravitational constant, m is the mass of the object, Me !s ng the mass of Earth, and r is the distance from the ohio of Farth. I World What happens to the