-stion 13 Given the functions f (x) = 2x - 3 and g (x) = 12+2. a. Evaluate ( ; ) ( 2). b. Write the domain of (ac ) using correct set notation.Question 14 Suppose 1,000 E.coli bacteria are present in a laboratory culture. An antibacterial agent is introduced and the population of bacteria P (f) decreases by half every 6 hours. a. Write the exponential function of form P (t) - Poekt that models the population of E. coli in the culture. b. When will the population decrease to 10?Question 15 Which of the following represents the domain of the function g (x) = Select ALL correct intervals. O {x | x>-3} O {x | x*-3} Ofa | x#1} O (-00, 1) U(1, 00) O (-3, 00) O (-3, 00) O (-00, - 3) U (-3, 00)Question 16 Consider the function f (x) = 20x2 - 9 . Find an expression for the difference quotient below, where It simplify completely to express the final answer.Question 17 Suppose g (ac) = - } (x - a)3 (x - b)? (x - 1). Describe the graph of (D) a. The graph [ Select ] the x-axis at x - a. b. The graph [zero2] the x-axis at x = b. c. The graph [zero3] the x-axis at x = 1. d. At the ends, the graph [end]