Please enter your initials here (6) 4. Determine whether the following data set involves exponential growth, exponential decay, or neither. Explain how you know. HINT: be sure to check both x and y values. a X 1 2 3 4 5 6 V 5 15 45 135 405 1215 b) X - 4 - 2 O 2 4 6 y 83.2 41.6 20.8 10.4 5.2 2.6 C) X 0 1 A 8 y 1 2 A 16 32 (4) 5. A social-networking site tracked the growth of its membership during its first two years. The logarithmic regression function is y =3.69+5.42Int where t is time in months and y is the number of users in thousands. a) Estimate the number of users after 15 months, to the nearest hundred. b) Estimate the number of users after 3 years, to the nearest hundred. Page 4 of 5 Chapter 7 Test