Please be legible! Thank you

16. Let u and 1} be the values of two varying quantities and suppose that 1.: changes at a constant rate of 4.4 with respect to 1:. 'W'hieh of the following statements is tr'ue'iI (a) 1.! = -'-l_4r {b} 1: = 4_4-.u (c) u = 4_4v {d} u = 4_4&U (e) u = 1: 4.4 5' 17. Sheryl is riding on a teeter-totter. Suppose I? is the measure of the angle between the ground and Sheryl's highest point on the teetertotter, and. suppose the bar between Sheryl and the pivot has slope m = 2.3 when Sheryl is at the highest point. Which of the following statements is true? '41 (a) tan{9} = 2.3 (b) tan(2_3) = 9 (c) 5511(9): 2_3 (d) mm) = 1 (e) oos(3)= 2.3 18. At practice one afternoon, Jan ran seven laps on a onehhalf mi]e track at a constant speed of three miles per hour. 'W'hieh of the following is a constant quantity.r in this situation?I (a) the speed in miles per hour that Jan ran (b) the total number of laps that Jan ran (c) the total time that Jan ran (d) the total hours required to run one lap (e) all of the above