Answer the following questions show your work.

I. Determine whether the relations below represent functions. Explain how you know. Relation How you know. {(-2,3),(-5, 10)(-7, 16)(-9,22) .....2. If /(x) = 4r- 11, determine b. /-3) c. rif /x) = 533. A list of numbers is given. -9, 1,0, -7.5,1 Using any combination of the numbers, O generate a set of ordered pairs that represents a function. J.L O generate a set of ordered pairs that does not represent a function. 4. The equation C = 10a + 45 represents the total cost, C dollars, for a sports banquet, when a people attend. a Describe the function in words and then express the function using function notation. b. Determine ((250) and explain what the result represents.c. If the total cost of the banquet is C(a) = 4 295, find a, the number of people attending the banquet