Please help me with this page of questions. I desperately need help on these! I would really appreciate it!

7-26. Determine if the tangent function is even, odd, or neither. Show your result graphically as well as algebraically. 7-27. Using the graph to the right, state the intervals where the function is increasing. decreasing. concave up, and concave down. 7-28. Lauren is playing with a yo-yo and keeping (1.7, 46) (2.9,46) track of its height over time. She has plotted 40 some key points on the graph to the right, The y-values are in inches and the x-values are in seconds. Complete the following problems based on the graph. 20 a. How long does it take to complete one cycle? 10 b. How long is the string? 0 0.5 1 1.5 2 2. 5 C. Find an equation that will model the height of the yo-yo over time. d. Find the first two times when the yo-yo was exactly 30 inches above the ground. 7-29 Given log; M = 2.1, log, N = 0.6 and log; P = -1.8 , find logb UNP M 2 7-30. Using the graph of f(x) to the right, sketch the following functions. a. - 2f (x ) f ( x ) b. f ( -x ) + 1 C . 7 ( x ) 7-31. Write the sum for estimating A(#, 1S x $ 4) using 10 left-endpoint rectangles. Determine if the estimate is an upper bound or lower bound. Justify your answer with a sketch of the curve showing a typical rectangle. 332 Pre-Calculus with Trigonometry