2. Here are four situations. Two describe linear functions and two describe exponential functions. Which ones are which? a. My savings account is increasing by $1000 every year. b. My savings account is increasing by 5% every year. c. The population of a small country is increasing by 5,000 every year. d. The population of a small county is increasing by 1.4% every year. 3. Here are four input/output tables. Two describe linear functions one describes an exponential function, and one is neither linear or exponential. Which ones are which? a) Linear or exponential or neither? 0 1 3 6 4. 2 9 3 12 15 b) Linear or exponential or neither? X 0 3 1 11000 2. 12100 4 14641 f(x) 10,000 13310 c) Linear or exponential or neither? X 0 5 f(x) 500 600 10 700 15 800 20 900 d) Linear or exponential or neither? 0 1 5 7 X 3 11 6 15 7 20 4. Here are graphs of three functions. One is exponential, one is linear, and one is quadratic. Which one is which