Knowledge 1. Which model appears most suitable for the scatter plot? (K1) A linear model B quadratic model C exponential model D no model is suitable 2. Which indicates that a linear model is the best fit for a set of data? (K1) A first differences are constant B second differences are constant C ratios are constant D second differences and ratios are constant 3. A population increases at each rate as shown. Determine the growth factor for each. (K2) a) 22% b) 125% 4. A population has each decay factor. What is the percent decrease in the population? (K2) a) 0.8 b) 0.96 5. Which model appears most suitable for the data in the table: linear, quadratic, or exponential? Justify your answer. (K2) X 0 2 1 6 2 18 3 54 4 1626. A computer virus is spreading throughouta large computer network. After 3 days 240 computers have been affected. a) At this rate how man}.r computers will be affected after 6 days, 9 days? Explain. (K2) b) How many computers will be affected after 2 days? (K1) c) Copy and complete the table for days From 1 to 10. From your table justify that the relation is linear. Days Number of Computers aFfected 1 2 3 4 5 6 i" 3 9 10 1'. The approximate population in Ontario, P millions, can be repreSented by the exponential function P = 10.5(1.014)", where n is the number of years since 1935. Estimate the population of Ontario in each year. a)1990 h)2000 (K3) (K4)