Question: Effect of smoking bans the sales (in billions of dollars) in restaurants and bars in california from the beginning of 1993 (t = 0) through 2000 (t = 7) are approximated by the function
S(t) = 0.195t2 + 0.32t + 23.7 (0 ≤ t ≤ 7)
A. Show that the sales in restaurants and bars continued to rise after smoking bans were implemented in restaurants in 1995 and in bars in 1998. Hint: show that s is increasing in the interval (2, 7).
B. What can you say about the rate at which the sales were rising after smoking bans were implemented?