I need assistance with this math homework

Rutgers University-Camden 640:121 Calculus I Assignment 3.5 For each of the following functions: (i) Determine the domain. (ii) Determine any horizontal or vertical asymptotes, if any. (iii) Determine any local extrema and the intervals of monotonicity. (iv) Determine any points of inflection and the intervals of concavity. (v) Sketch a graph of the function. 1. y= x - 5x 2. y = 1 - 3 3. y = 4. y = I + COST for r E [-27, 2x] (You may use resources like graphing calculators or apps to assist you but be sure to show all work in addition to sketching the graph.) (EXTRA CREDIT) Using only the definition of concavity (that is, WITHOUT using derivatives! (or just looking at the graph)), show that y = 2' is concave up for all r > 0. Start by saying that a and b are numbers such that 0