What's the correct answer for 4b and 4c

Part II. Free Response You will need to use your TI-Nspire. Point values for each problem are given in ( ). 4 Month 2 3 4 5 Temperature F(t) 25 50 72 88' The average daily maximum temperature, F(t), in F, for a certain city is shown in the table above. a. Use the data in the table to find the average rate of change of the maximum temperature from t = 1 to t = 6. Be sure to include the correct units. (Worth 1 point) 8 8 (8 ) (FO) 96 6 - 1 ( month ) 5 19.2Fo / month b. Use the data in the table to estimate the rate of change of the maximum temperature at t = 4. Be sure to include the correct units. (Worth 1 point) + = 3 712 8 25- 72 2-47 - 23.5 0.5 +=5x25 months -3 -23.51 /month I got a positive value . c. The rate at which the maximum temperature changes for 1