please help to solve these math questions

Key Questions Now work on your Key Questions in the online. submission tool You may continue to work at this task over several session but be sure to save your work each time. When you have answered all the unit's Key Questions, submit your work to the ILC. (14 marks) 53. a) State the following information for the function f(x) = sinc: amplitude, period. ", wave, starting point (4 marks) b) State the starting point of the function f(x) = cosx. (1 mark) 54. State the amplitude, period, " wave, domain, and range of the function shown here. (5 marks) Advanced Functions MHF4U Lesson 12, page 26 .. . . . . . . . ......... . . . 55. a) The following data from 2006 shows the average daily consumption of natural gas at a home in Sudbury. 8 9 10 11 12 2 3 4 5 6 1.3 1.5 1.4 3.8 2.7 6.2 7.3 7.6 6.0 5.0 3.1 2.0 The amount of natural gas g is in m" and time t is in months (month 1 is January). Use technology to plot the data and then join the points with a smooth curve. Use the graph to estimate the values for amplitude, period, and 1/4 wave. (3 marks) b) Give a possible reason(s) that the natural gas used in the summer would not be zero. (1 mark) Now go on to Lesson 13. Send your answers to the Key Questions to ILC when you have completed Unit 3 (Lessons 11 to 15)